I’ve been investigating solutions for exporting blogs from Redgloo to elsewhere.
I’ve already added the functionlity to export your own blog posts as rss in one single rss file. This however doesn’t export comments, nor is it possible to export any access restricted material.
It seems feasible, by using rss2.php under mod/blog, to create an export facility which creates an extended WordPress rss feed to allow easy export to WordPress. This would allow export of comments and potentially tags as categories.
Some discussion would also be needed regarding access restricted material.