Mobile. Social. Those words seem to follow each other in most conversations.

With the improvements we've made to the Digg iOS app since September,

We are excited to announce that the Digg IOS App 2.1 is now available with support for Newsrooms, commenting on stories and several other improvements.

We are happy to say that the Digg App 2.0 is now available in the Apple App Store. An iPhone app has been one the most frequently requested products from Digg users and we're glad to be back with an improved version.

APIs are sexy, sexy things and we've updated the Digg API to get support for the new coolness of the Digg Newswire .

Digg has substantially rebuilt our infrastructure over the last year in what we call "Digg V4". This blog post gives a high-level view of the systems and technologies involved and how we use them. Read on to find out the secrets of the Digg engineers!