I should include a disclaimer to this comment that despite attempting to use Twitter multiple times, I still cannot find a use for it, so I would not consider myself a "Twitter user". That said, the criticism of the favorite -> like change makes no sense to me.

> Favorite (old) = neutral statement related to the importance of the tweet for you. It's mostly a bookmark, not really an endorsement.

> Favoriting a tweet didn't mean it was her favorite (as Twitter apparently believes)

Oh yeah? If that's true, that's a terrible UX. Any time you have to say "xxx doesn't actually mean xxx", you should stop and think extra hard about what you're saying. "Favoriting" a tweet should mean exactly what it says it means.

And considering how favoriting a tweet notifies the recipient, and a person's favorites are public, I don't buy that favoriting a tweet was a neutral reaction to a tweet. If I got a notification that said Bob favorited tweet yyy, I would take that to mean endorsement.

Just because some users are using it as a bookmarking service doesn't mean that's what most people use it as or what Twitter intends it to be used as.