I have accumulated many site locations, including forum sites, over the past 2 years--just put them in a Mac folder on the Bookmark Bar whenever I run across a new one. I occasionally delete from the list when a site becomes uninteresting, but I still have over 50 really good ones on my list. Some time ago I saw a site that had references to over 500 other Mac-specific sites, but I neglected to bookmark it. You can probably easily find this kind of library-of-Mac-sites site on Google.