Austin based Donoho Design Group, L.L.C. today released ch@tter 1.3, an update to the leading Twitter visualization app on the iPad. ch@tter lets you easily separate and categorize incoming tweets. Its innovative avatar treemap makes it easy to scan the top 30 reference-rich tweets. Version 1.3 adds support for Instapaper and adds to the web view the capability to tweet, retweet, email and bookmark the web links in your Twitter timeline. ch@tter separates the matter from the chatter!