Windows Live Spaces

Like Google's Wave, Windows Live Spaces is another site on this list that is not well and not truly dead just yet. Users can still go there and make new posts. But beginning next month, the site will be a view-only, before being completely shut down in mid-March.

Microsoft announced plans to shut down its blogging site in September in favor of Automattic's WordPress. As part of the transition, Microsoft offered users a way migrate their blog to WordPress, as well as making WordPress the default option on the company's Windows Live Writer software.