I make like $4-$5 or something a day from ads after tapas takes their cut? Like with all other income sources, you need to establish yourself well before it becomes much to talk about.
I would suggest building up multiple income sources to create a safety net, if you intend to do this professionally. Even if you make a good amount of money from source x, source x could end someday and then you need source y and source z to carry you while you find something to replace source x.