Twitter is reportedly launching a photo sharing service soon according to a report published on Techcrunch. This photo sharing service if launched will directly compete with Twitpic and others like yFrog.
Twitter users are now using third party services like Twitpic, but a built-in photo sharing app for twitter will give an advantage over other third party apps. The move will help twitter to keep their users hooked on to twitter than losing them to third party sites.
Til now twitter only allowed text, now if they start photo sharing, we can expect video sharing also in the near future.