Just a quick note – if you switch from Community Server to WordPress like I have, in order to keep your links working you can add a simple regex rewrite rule to IIS. I simply used the following:
^/james_crowley/archive/(.*).aspx$
http://www.jamescrowley.co.uk/$1/
and
^/james_crowley/(.*)$
http://www.jamescrowley.co.uk/$1
where /james_crowley/ was where my blog was installed previously (on weblogs.asp.net as it happens).