These increases have occurred over a three month period from September 20 to December 20, 2007.
According to Alexa.com data, online gaming sites have been enjoying an increase in traffic in recent months despite the introduction of the Unlawful Internet Gambling Enforcement Act in October.
PokerStars.com, which assumed much of the poker player customer base left behind from those poker sites abruptly departing the US market such as PartyPoker and Paradise, has witnessed a three month rank increase of 2,037.
Other sites to have fared well in the period include PinnacleSports.com which saw a three month increase of 2,032; Bodog, (2,413); Sportsbook.com, (3,116) and VIP.com, (1,740).
In stark contrast, online gambling websites that have pulled out of the US market have seen some drops in rankings. Bet365 has experienced a decrease of 1,015, whilst Canbet.com, which only left the US market last month, moved up slightly by 425. Paradise Poker fell 6,935 ranks.
According to PokerSiteScout.com, average real money ring game player counts for PokerStars jumped from just over 6,000 to 8,000 heading into November, whilst Full Tilt Poker has seen an increase from 2,000 to 4,000.
GoldenPalace Casino, which has not left the US market, has fallen 3,497 rankings.