Ask HN: I think ModMyI.com ripped off my jailbreak tweak. Is this common?

So, I made an iOS jailbreak tweak called LSMusicSeek and submitted it to ModMyI.com for inclusion in Cydia a few days ago. Basically it replaces the volume slider on the lock screen with a seek slider, so you can seek through your music on the lock screen.

I then noticed an announcement for a new tweak called LSScrubbing, which does pretty much exactly the same thing. But it costs $1.99.

Mine was submitted as a free tweak, but it seems that the "control" file of the .deb package was altered. Originally, my tweak depended on MobileSubstrate. In Cydia, my tweak now depends on Winterboard, and is now categorized as a Winterboard theme. But it's not a Winterboard theme, it is a MobileSubstrate tweak. I don't see how this happens by accident.

Is this a common occurrance in the jailbreaking community? I'm new to jailbreaking, this is my first (and probably last) attempt at a tweak.

In any case, I'm releasing the source code on github at https://github.com/arthurrr/LSMusicSeek.git