My website stats as as follows; October 8k unique visitors "number increases about 500 to 1k per month. The site is a forum and has about 1500 members only about 80 really active. I get from adsense anywhere from $5 to $16 dollars per day. Most of the traffic is organic; 29 different refering search engines Pages Percent Hits Percent Google 4625 Windows Live 407 Yahoo! 246 AOL 166 MSN Search 117 Google (cache) 91 What can I do to increase my adsense?
You need more visitors, you can't increase your earnings much without them. You can try using different ad formarts or even referrals, but the earnings probably won't increase much. Build some backlinks to increase your organic traffic, maybe consider doing some link exchanges with related sites or even advertising.
Earning money on forums is notoriously hard. With only 8K uniques a month and earnings of $5-16 a day is pretty damn good. ssandecki is right. build backlinks, talk in other forums with your forums link in the footer, build link exchanges with sites that cover the same topic as your forum. Sounds like you have a good start though!