I’ve had countless requests to buy text links, do link exchanges, and create hidden links on mefi to lame spammy companies. I’ve also had content companies ask if I wanted to institute a NYTimes type of system where archive pages cost a buck to view after 30 days, and I’ve gotten offers from ad firms to do keyword smart tag type advertising on all old archive pages. I’ve refused them all, and developed a mix of self-service ads and donation/payments for new users that supports the site and my time well.