The best thing to do with respect to filing bugs, requests, or complaints is to click the "Feedback" link at the bottom of every page on MSN Spaces.
You could send feedback my way as well via email or comments, but it is great to actually collate it all and see which bugs/requests/complaints are tracking higher than others. We use this data *directly* when evaluating the product. And our feedback system
enables that while my Inbox is an overloaded mess