The Denver Public Library has always had its geeky side, from boasting DVD selections that rival Blockbuster to offering hordes of B-movies available for streaming online. But it may have outdone itself with a web portal it developed for smart phones. Not only can patrons search the online card catalogue in a format that's easy to read on their tiny screens, but thanks to a program called OverDrive Media Console, iPhone, Android and Blackberry users with a library card number can browse, download and listen to audiobooks directly from their phones. It's just like borrowing an old-fashioned book: When the title is due "back," you can no longer listen to it. Check it out.