Website garnering registrations by "donating" few cents of dollar for each merged commit. They started a while ago but looks like it's expanding. Just FYI in case you've not received one yet.
Nemo
-------- Messaggio inoltrato -------- Oggetto: You received a tip for your commit Data: Fri, 09 Jan 2015 07:36:52 +0000
Hello, Federico Leva!
You were tipped 0.11 XPM for your commit on Project wikimedia/mediawiki. Please, log in and tell us your primecoin address to get it.
Your current balance is 0.11 XPM. If you don't enter a primecoin address your tips will be returned to the project in 30 days.
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