If you're an Android power user who regularly applies mods or flashes new ROMs, you've likely run across Koushik "Koush" Dutta's work. He's the maker and maintainer of the ClockworkMod recovery and ROM Manager, and a publisher of several of his own independent applications. One of those apps is the powerful Carbon backup app, which we've featured before. It looks like the name "carbon" was a bit too close for comfort for the makers of Carbonite software (a more mainstream backup solution for desktops and mobile), who sent Koush a cease-and-desist letter back in February.
As explained on Koush's Google+ page in his typical and endearingly nerdy way, the developer renamed his app "Helium", and it's still available on the Play Store.