It depends on how you advertise it. Some advertisements are too ugly and often had no clicks nor attentions to anyone, yet some endorses too good that it attracts so many referrals/clients. Hence, it would only be worth it once your ads would look wonderful and attractive. But still, there's a flaw with it, most people nowadays prefer adblocking extensions in their browsers or browsers that have adblockers built-in. Hence, if it would be now, then I think signature here in forum is much worth than paying ad spaces in any websites that would only be adblocked.