Sharing photos is an integral part of every networking site. Twitte is a content sharing site but twitter is more of text than photos and videos. Twitter does not have photos feature on profile but sharing photos on twitter isn’t difficult at all, thanks to some really good third party tools here are some

1.twitpic: Twitpic is a free tool and easily the most popular way to share photos on twitter. You can log in using your twitter username and password upload pics and post a url as a status update for frnds to see.
2.twitsnaps: This is another cool way to share photos. You can even crop or magnify your pictures here . twitsnaps conducts photo contest too
3.Tweetphoto: this is another great site, Here you can upload phtots and post them to facebook as well. You can upload through web, mobile or even email.

Apart from these twitxr, snaptweet, twitgoo, yfrog are also great to share photos