Thanks everyone! It was exciting to see people use this thing.
As requested, here's a bunch of info about the project.
1. I made it in 4 hours during Fun Hours at my company.
2. It's a rails app, although main page is served by nginx, there is only one controller, with one action, using one view and one model :)
3. I submitted it to HN and Reddit. The latter community completely ignored it (1 upvote) due to bad name ("Please give me a dollar").
4. I used Reinvigorate to track live statistics. A very nice tool.
5. There were 2600 uniques and 6200 pageviews (for an app with only two pages, one of which is visible only after paypal). People were refreshing their browser, even though JS actually polls for a new image automatically.
6. I made $20. 8 of them were for ads.
7. One person paid $1 to post a shock image.
8. PayPal gives me emails, names and addresses of everyone who paid. I will not contact anybody.
9. Nobody loved the domain name, so I will reuse it!
10. NO, I will not add features to this fart app ;)
> No. We use Jenkins.