Flickr had feature to blog pictures. I usually use it for posting picture to Twitter, but it can also post to many other blog platforms. LiveJournal, TypePad, Blogger, WordPress, well, the platform you can share in Windows Live web activities plus many else for self-hosted blogs. Windows Live Space, although unlisted and losing it’s relevance day by day, is also supported.
Windows Live Space support Meta Weblog API (used by Windows Live Writer). To give credit to the rightful, here’s the article on how to setup the informations from MSDN. Not too complicated, promise.