here are some old lists swiped off the net that may be of use.
Don't see many ads on their home pages though.
PR10
Adobe
http://www.adobe.com/
Adobe Acrobat
http://www.adobe.com/products/acrobat/readstep2.html
World Wide Web Consortium
http://www.w3.org/
Macromedia
http://www.macromedia.com
Energy.gov
http://www.energy.gov
Apple - QuickTime
http://www.apple.com/quicktime/
Keio University
http://www.keio.ac.jp
National Aeronautics and Space Administration
http://www.nasa.gov
Apple Computer
http://www.apple.com
Google Search
http://www.google.com
W3C CSS Validation Service
http://jigsaw.w3.org/css-validator/
The European Research Consortium for Informatics and Mathematics
http://www.ercim.org
MIT Laboratory for Computer Science
http://www.lcs.mit.edu
National Science Foundation
http://www.nsf.gov
Microsoft
http://www.microsoft.com/
Apache Software Foundation
http://www.apache.org/
The White House
http://www.whitehouse.gov
Real Media
http://www.real.com
IBM
http://www.ibm.com/
Cisco
http://www.cisco.com/
Stat Counter now 9?
__________________
dmoz = 9
phpbb = 9
statcounter now 9 apparently - I don;t have pr toolbar.
PageRank 9
* AAAS.org - American Association for the Advancement of Science
* ACM.org - Association for Computing Machinery
* AltaVista.com - AltaVista, search engine
* Amazon.com - Amazon.com, shopping site
* AOL.com - America Online, portal
* APS.org - American Physical Society
* Archive.org - Internet Archive
* Arizona.edu - University of Arizona
* ArXiv.org - ArXiv.org e-print archive
* ASU.edu - Arizona State University
* BarnesAndNoble.com - Barnes & Noble, bookseller
* BBC.co.uk - British Broadcasting Corporation
* Berkeley.edu - University of California, Berkeley
* Blogger.com - Blogger, a weblog publishing tool
* Bloglines.com - Bloglines, web-based news aggregator
* Brown.edu - Brown University
* BU.edu - Boston University
* Cam.ac.uk - Cambridge University
* CBC.ca - Canadian Broadcasting Corporation
* CERN.ch - CERN
* CMU.edu - Carnegie Mellon University
* CNET.com - Cnet, technology portal
* CNRS.fr - Centre National de la Recherche Scientifique
* Colorado.edu - University of Colorado at Boulder
* Columbia.edu - Columbia University
* Computer.org - IEEE Computer Society
* Copyright.gov - U.S. Copyright Office
* Cornell.edu - Cornell University
* CreativeCommons.org - Creative Commons
* Debian.org - Debian, open-source operating system
* DHHS.gov - Department of Health and Human Services
* DHS.gov/dhspublic/ - Department of Homeland Security
* DOI.gov - U.S. Department of the Interior
* Duke.edu - Duke University
* eBay.com - EBay, auction site
* Economist.com - news site
* Elsevier.com - Elsevier, publisher of scientific and medical literature
* EnergyStar.gov - Energy Star
* EPA.gov - Environmental Protection Agency
* ETHZ.ch - ETH Zurich, Swiss Federal Institute of Technology
* ErekAlert.org - science news site
* Excite.com - Excite, portal
* Expedia.com - Expedia, online travel agency
* Flickr.com - Flickr, remote image hosting site
* Freshmeat.net - Freshmeat, cross-platform software directory
* FWS.gov - U.S. Fish and Wildlife Service
* GameSpot.com - GameSpot
* GNU.org - GNU Project
* Google.co.uk - Google, UK version; several other versions are PR9 too, including French and Japanese versions
* Grants.gov - unified site for interaction between grant applicants and the U.S. federal agencies that manage grant funds
* Harvard.edu - Harvard University, Massachusetts, USA
* HUJI.ac.il - Hebrew University, Jerusalem, Israel
* House.gov - U.S. House of Representatives
* HP.com - Hewlett-Packard
* HTMLHelp.com - Information on web authoring
* IEEE.org - Institute of Electrical and Electronics Engineers
* IETF.org - Internet Engineering Task Force
* IIE.org - Institute of International Education
* IMDb.com - Internet Movie Database
* Indiana.edu - Indiana University system
* Inria.fr - INRIA, French national research institution
* Intel.com - Intel Corporation
* internet2.edu - Internet2
* IOM.edu - Institute of Medicine
* Jalbum.net - photo album software
* Java.com - Java programming language
* JHU.edu - Johns Hopkins University
* Linux.com - Linux Operating System
* LOC.gov - Library of Congress
* MamboServer - Mambo, open-source PHP content management system
* MapQuest.com - MapQuest
* Mozilla.org - Mozilla, open-source internet tools
* MSN.com - MSN.com, portal
* MSNBC.com - MSNBC.com, portal
* MSU.edu - Michigan State University
* MySQL.com - MySQL, open-source database engine
* NAP.edu - National Academies Press
* NAS.edu - National Academy of Sciences
* NationalAcademies.org - Science, Engineering and Medicine research
* Nature.com - Nature Publishing Group
* Netscape.com - Netscape, portal
* NewsForge.com - NewsForge
* NYTimes.com - New York Times, news site
* NIH.gov - National Institutes of Health
* NIST.gov - National Institute of Standards and Technology
* NOAA.gov - National Oceanic & Atmospheric Administration
* NREL.gov - National Renewable Energy Laboratory
* Oanda.com - Currency conversion site
* OpenSource.org - open source
* Opera.com - Opera Software, web browser for desktop and mobile devices
* Oracle.com - Oracle Corporation, software company
* Oreilly.com - O'reilly, computer bookseller
* ORNL.gov - Oak Ridge National Laboratory
* OSTG.com - Open Source Technology Group
* OX.ac.uk - University of Oxford
* PBS.org - Public Broadcasting Station
* Perl.com - Perl, scripting language
* PHP.net - PHP, web scripting language
* phpBB.com - phpBB, open-source PHP bulletin board system
* Pitt.edu - University of Pittsburgh
* Plone.org - Plone, open source content management system
* Princeton.edu - Princeton University
* PSU.edu - Pennsylvania State University
* Python.org - Python Programming Language
* Ranchero.com/netnewswire/ - RSS software for Mac
* RealNetworks.com - RealNetworks
* Realplayer.com - RealPlayer audio/video software
* RedHat.com - Red Hat
* Regulations.gov - portal for federal rulemaking
* Rutgers.edu - Rutgers University
* ScienceMag.com - Science Magazine
* Section508.gov - Section 508 Amendment to the Rehabilitation Act of 1973
* Senate.gov - U.S. Senate
* SI.edu - Smithsonian Institution
* Slashdot.org - Slashdot, technology news site
* SourceForge.Net - Sourceforge, a directory of open-source development projects
* Stanford.edu - Stanford University, California, USA
* State.gov - U.S. Department of State
* State.tx.us - Texas portal
* Sun.com - Sun Microsystems
* TRUSTe.org - web privacy organisation
* UCI.edu - University of California, Irvine
* UCL.ac.uk - University College London
* UIUC.edu - University of Illinois at Urbana-Champaign
* UMD.edu - University of Maryland, College Park
* UMich.edu - University of Michigan
* UMN.edu - University of Minnesota
* UN.org - United Nations
* Unesco.org - United Nations Educational, Scientific and Cultural Organization
* UPenn.edu - University of Pennsylvania
* USC.edu - University of Southern California
* USDA.gov - U.S. Department of Agriculture
* URGS.gov - U.S. Geological Survey
* UTexas.edu - University of Texas at Austin
* UToronto.ca - University of Toronto
* VeriSign.com - VeriSign
* Virginia.edu - University of Virginia
* Vlib.org - World Wide Web Virtual Library
* Washington.edu - University of Washington
* WebStandards.org - Web Standards Project
* WHO.int - World Health Organization
* en.wikipedia.org - Wikipedia, the free encyclopedia (English version)
* Windowsmediaplayer.com - (redirect) Microsoft's audio/video player
* WinZip.com - WinZip, commercial archive utility
* Wisc.edu - University of Wisconsin
* WordPress.org - WordPress, open-source PHP blog script
* Yahoo.com - Yahoo!, portal
* Yale.edu - Yale University