One predicament I have here is that while I'm 100% free to favorite anything I want without risk of it ending up on someone else's timeline, most of the stuff on Twitter I wanted to like (but that I didn't want to push onto anyone) was shown to me through... other people's likes ending up on my timeline. :p
@NovaSquirrel ...that's actually a good point, also applicable to me, and something that I hadn't thought about 
I guess it intensifies the importance of the boost feature?
@NovaSquirrel I got a bit confused reading that