Web 2.0 Directory script is distributed in two versions: free and commercial. Commercial version is different from free version just by their terms of use. Free version for only non-commercial purposes, so there are not some e-business modules in the distributive. Also it is branded version with http://www.salephpscript.com link in the footer of each template. Only owners of full licensed version may remove this link. Commercial version does not have limits of use except resale and copyright code comments removal.