OPW -- Oct 14 -- The Hitwise rankings are in for September. Singlesnet, PlentyofFish, YahooPersonals and Match.com maintained their #1, #2, #3 and #4 spot respectively. Free dating site DateHookup.com moved ahead of racy gay dating site Adam4Adam and eHarmony to take the 5th position. UsearchLocal ousts OKCupid from it's 12th position. Hot or Not slides off the top 15 to #19.