[throwawayValue]

It's a great feeling knowing that you've built something which is used by thousands of people, but even better when it's generating revenue to cover the costs (your time, hosting, etc). However, to put things in perspective you're really only talking about 100 visitors per day and $1 in revenue. Factoring that, I suggest focusing more on improving the site, growing it's traffic and then when it passes 500 visitors per day start focusing on revenue. If you prefer the AdSense route, make sure you've optimized your ad placements and the type of ads you're serving.

This advice is coming from someone who has a site doing roughly $5k month from AdSense via 275k+ visitors / 1.3M+ pageviews and it makes up about 30% of the site's revenue. Rest is from paid plans & affiliate marketing.

[iurisilvio]

Follow this advice! 3k users is awesome. It validates your product. Get more users to do more money.

It is a nice challenge and you'll learn a lot.