What's going on? A couple of my sites have droped 3-4 places. One is an excellent refrerence site with hundreds of pages, it was no2 on page one of G. I think Wiki was at no5. Now Wiki is at 1 and my site is down to no5 on page 1. I did several searches for various words and Wiki is at the top of page 1. Is this due to a Google update? Is it permanent?