LegiStorm continues to expand its impressive collection of House and Senate documents with its most recent addition causing a mini-storm of its own by capturing, archiving and making text searchable all Capitol Hill tweets and press releases. In so doing, the StormFeed service caught a few Capitol Hill staffers by surprise since their tweets, not all of which were strictly official, became word searchable and accessible as a whole, as opposed to on a feed-by-feed basis. (More on this from the Washington Post's Al Kamen.) In the meantime, keep an eye on LegiStorm as the service rolls out new products on a fairly consistent basis.