I just found a new setting that links the likes with rep...so now liking something will also give rep. There's nothing I can do to apply rep to existing likes (I don't think), but from now on it should work. Feel free to test it and let me know.
Also, I've turned off like notifications. That might save us some overhead, and prevent you from having LOTS of notifications. If there's an olverwhelming desire to turn them back on I'll do so.