After more than two months of beta testing among its users, Twitter announced on Aug. 10 that Twitter Images was available to the masses.

Making third-party applications such as TwitPic and yfrog unnecessary, Twitter’s new photo-sharing services enable users to add images of up to 3MB in size to a tweet by clicking the camera icon at the bottom of the page. The image appears as a thumbnail in the feed, but can be enlarged on the right-hand side of the page...

In a development seemingly timed to respond to Twitter’s announcement in June that it will be improving its photo-sharing tools, Facebook, too, is planning to launch a new app for photos soon.

Facebook’s photo app would reportedly be a mélange of several others available today, such as...