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-- Community Building and User Generated Content
---- Internet Brands sues Xenforo on eve of beta release
graeme_p - 4:40 pm on Oct 8, 2010 (gmt 0)Thread source:: http://www.webmasterworld.com/community_building/4211336.htm
vBulletin is not open source. Look at the license.
I am pretty sure Xenforo is not open source either, and SMF has a not quite really open source license.
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