You are right that forum is doing well but this is just starting.. We have to do a lot more.
And for the advertisements.. We don't have much traffic right now! We are gaining but still there is lot more to achive,
You are also right that it requires money to run, moreover it require lots of work.. You must have noticed that we are constantly doing some or other things on the site.
Now y don't we have sponsors.. Frankly -- we don't have enough traffic so that sponsors come to our site.. but its increasing ..
Lastly.. We have only google adsense in the forum.. and those are because we had google ads account otherwise we would never put the ads.. Google pays on the basis of No. of clicks we get and that is negligible..
So.. y don't we have sponsors or ads.. b'cause this is not the time for them