[nakedrobot2]

So every Twitter client that uses "twit" "tweet" etc. in their name, is owned by Twitter? I don't think so.

[kenkam]

This analogy breaks down because Twitter (when they started out) wanted everyone to use their API, they want people to associate their app with their platform (e.g. TweetDeck and TweetBot)

ZenDesk on the other hand cannot be said to do the same.