I'm not sure if there is an easier way to do it, but one way would be to click on My SG, then under Manage Your Stuff click on Friends' Blogs Page, from there you can uncheck Friends and would just be left with profiles you've bookmarked.
There is probably an easier way, but I've never tried bookmarking a profile, so I'm not sure
There is probably an easier way, but I've never tried bookmarking a profile, so I'm not sure