Don't know about Facebook in particular, and oh man is Google not cut out to do a good social site. But this kind of thing happens all the time, yeah. It's exp

Don't know about Facebook in particular, and oh man is Google not cut out to do a good social site. But this kind of thing happens all the time, yeah. It's explicitly called out in a lot of business books -- as a small business you often have a lot of cover to undercut the incumbent, because they're just not interested in a niche that may be huge from your point of view.