Rating: 5 stars
Canalblog is not offering any help in retrieving your own data, even for the sake of archiving. This plug-in retrieved my full blog (279 articles including pictures and weblinks, and 1956 comments) in about 2 hours of fully automated work. I had tried a previous version that did not retrieve the comments. That is fixed in this version.
Many thanks to the author, I am now ready to run my blog under WordPress from my own server.