Originally Posted by MainstreamGuy

My best month was 3K... But usually I make around 1K per month with YouTube. I don't put too much time into that campaign, but I have seen people with 10 accounts and around 30 videos in each account, cashing at least 10K per month.

It's a long story to get in track, is not as simple as uploading stuff and wait for the money, there are many tricks and tweaks to increase exposure and, more importantly, to increase the amount of money per click and to get the "skip this" ads that are 5 times more valuable that a simple banner in the bottom.