I find twitter more and more attractive since they have updated the UI of it. The profile looks good and I find it more easy to use. I can see my mentions and direct messages and others functions.
In terms of this being a major competitive feature, photos are simply a major part of any social network. It gives users a reason to come back, as well as visit individual profiles more. Good move. Probably overdue, but this just continues Twitter’s recent trend of making major improvements, which it has been doing pretty much since Jack Dorsey returned to the operations at the company.
Definitely this feature is attractive so though i don't log in a long time. Right now i log in and will enjoy with photo galleries.