I have seen my TLA grow from $5/month to $15/month for a space on two of my pages. When I updated the code (PHP version of the code), I had no advertisers - and thus, income changes from $15/month to $0/month... I also had some PR loss during the last month - but I don't think that I'd blame this since the this PR dip seems to have happened to lots of sites. When I wrote to the TLA tech support, they simply answered that my advertisers have pulled their ads from my space. Anybody else out there have a similar experience??