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...