If you use the Twitter client/service TweetDeck, you should log out and log back in to block a security vulnerability that quickly spiraled out of control last week, resulting in a torrent of out-of-control retweets. Twitter took TweetDeck offline until the bug could be fixed, but all should be well now. follow link
Hide TextExpander in the Dock
If you don't want to see TextExpander's icon in the Dock and the application switcher, you can remove it. Just open TextExpander > Preferences > Appearance, and select Hide TextExpander Icon in Dock. You'll still be able to access TextExpander from its menubar icon.
All Hands off TweetDeck