Future of libraries

I was out in my local public library to pick up a particular book. There came a passing thought. With Web 2.0 and the way Google is marching ahead, I was thinking whether we will be needing libraries the way they are several years froms now. Google had the project to scan shelves of books into their database. I think due to coyright restictions things are going slow. Come to think of it, Google is the database. So to read a book, if it is available in the web - it saves a trip to the library. Saves energy. Sure there are other opporutnity costs we can take credit for. So what happens to the libraries? They deifinitely have to re-define re-strategize themselves. What happens to the catloging process? Maybe less of a storehouse and more of a meeting place. Maybe more like a club for conversations. Well, that too can be done over the web. Then what? What do we then use the brick and mortar for? I will keep thinking about it.