Long available using third-party Twitter tools such as PeopleBrowsr or TweetDeck, Twitter is readying the release of lists, or otherwise known in other networks (FriendFeed) as groups. This is welcome, albeit overdue, feature that allows users to categorize and organize information based on themes, interests, action items, locales, and friends/peers for future reference, followup and sharing. The Twitter blog goes into greater detail (note the fact that lists are public by default): The idea is to allow people to curate…