The gambling category experienced gains in Europe (up 3% in September versus August). Leading the category were Cassava Enterprises (which includes 888 Holdings) with 6.9 mln visitors (up 9% versus August) and PartyGaming with 4.1 mln visitors (up 16% versus August). It should be noted that these increases occurred prior to the passing of anti-online gambling legislation in the US in October that has many wondering about the future of many of these sites, comScore warns.