Face book has many they are all linked to each other by the fans crossing over in one click too,the feeds are instant as soon as you like a page you are on tap from then on.
Their trouble is its one page and all over, too long to scroll on down a page if you are looking for something its gets slower and slower the further down you go. so there is no referencing, no set history, its all very scattered but instant and good info so no real threat to solid forums.
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