Koant (a Breton name, incidentally) has created a French-language community blog, Madame Martin, on the model of MetaFilter and MonkeyFilter (of which he is a member); it’s only been around for a few weeks, which means that (if you’re francophone) you can get in on the ground floor and become a Founding Member with a nice low user number, as well as enjoying discussions of the news of the day and the Best of the Web. Ca vaut le détour!
Update (May 2023). The blog breathed its last on 29 Septembre 2008.
This looks promising. It’s high time, as my mother would say, for me to hone my French.