FiledBy has a new web site service for authors. The name suggests a linkedn sort of service but it seems more Facebook-ish. They've preloaded it with published authors through data-mining, mostly. So if you are an American or Canadian published author, you might already have a page that you can claim somehow and correct/improve. (This seems nightmare-ish to me, verifying that someone claiming the web page is the actual author and not some digital vandal.)

Otherwise, unwashed authors can create a new page. There are free and premium services, of course. Their About page seems to be the only source of information and is useless, but this business-venture article from Nashville where the service began has more information. There is a bit about it on Publishers Weekly, too.