.info or .biz for a website with articles on affiliate marketing?

[Azam.net]

I sold the .com of a four character domain name and am now left with the .biz and .info. I'd like to set up a serious affiliate marketing portal. Would you recommend I use xxxx.biz or xxxx.info for it please?

I thought .biz might go with a site about business/marketing, but am concerned about the association with spammers which has been mentioned on these forums.

Thank you.