Are there ways to figure out the following using the REST API -
1) Figure out whether the authenticated user posted a tweet from a mobile device, if yes which one?
2) Figure out whether the authenticated user has used a client/app to post/create the tweet.
3) Find all lists created by the authenticated user.
Thanks,

Replies
1) Not necessarily from a mobile device, but from a particular client application, yes: see the source field in the Tweets field guide
2) Not as a matter of fact -- only by seeing whether one of their recent 3,200 tweets utilized a particular application
3) Yes, see: GET lists/all and similar methods.
Thanks for the responses...
I wish you had a better search interface (Google?:) to search through the discussions...when I try searching for this post's title -'API Questions' it brings me back a page to create a new discussion!