From the page: Gist finds and organizes social data and puts it at your finger tips. Gist offers a number of ways to organize your contacts- tags, by importance/frequency of information flow and good old alphabetization. For each person, there are the standard fields for phone, address, etc., but Gist goes social by adding fields for LinkedIn, Twitter, Facebook, RSS feeds, etc. Their search engine is so powerful that in some cases, when adding in a new contact's name it immediately finds their twitter and LinkedIn info and adds it automatically! - Teeg