COMMENTARY | When it comes to social networking, Facebook and Twitter are extremely popular avenues for people to explore. While Facebook allows users to post pictures easily from wherever they are, when Twitter users want to upload a picture, they have to turn to third-party applications like yfrog or Twit pic. However, Twitter is apparently moving to launch an official photo sharing service very soon. Sharing pictures in a tweet stream is fairly popular activity, and it really makes sense that the folks at Twitter would want to have everybody using their service, instead of a third part app. Most of the third-party...