Hello I'd like to start using Twitter, and have a few questions: Is there a way to send a private message to a Twitter user without their following me, in case I don't want the contents to be read by people following me? Are there better Android apps than the official app? Does that app support logging on with a different account without retyping login/password? Is it possible to attach a picture taken with smartphone, and possibly include GPS coordinates? Can the application suggest entries for # and @? Thank you.