Saying they have nothing to do with each other is entirely disingenuous. Blogs want comments to be tied to the commenter's identity. Facebook is by far the larg

Saying they have nothing to do with each other is entirely disingenuous. Blogs want comments to be tied to the commenter's identity. Facebook is by far the largest identity provider on the web. Thus, blogs tie comments to Facebook. While some may not like it, it makes an abundant amount of sense.