What can be accomplished with a Tweet? That’s what Twitter would like to know, and their new ‘#PoweredByTweets’ challenge in the UK is hopefully going to answer that question for them. The actual challenge is two-fold: either create something beautiful with Twitter/Tweets, or solve a problem using Twitter. Prizes will be awarded, with a judging panel handing out unnamed packages to the top three winners in each category. Not only a contest, those with the best ideas will have their ideas brought to life by Pixie Labs.