As blogging software has grown increasingly user-friendly, many libraries are employing blogs to make their web presence as inviting and interactive as their bricks-and-mortar counterpart. Libraries are reaping the rewards, too: well-written, frequently updated public blogs help librarians relate to their patrons, generate support for new building initiatives, and market programs, collections, and services. Internally, staff blogs can foster improved staffwide communication and camaraderie. This author suggests that before downloading blogging software and commencing training, librarians should first consider the desired purpose of blogging, the time commitment required, the scope of topics, whether or not to allow public comments, and how success will be measured.