i think with the ease of finding people online, its a lot easier to meet up with people then go out. my friend recruits girls all the time from myspace, facebook and match.com to go out with.
ive noticed the same thing here, but i dont know if its now a social stigma to go out "single" or not. the one bar by me used to always be full of single girls, for about the past 2 years its more of a couples bar to watch a band.
my

is now bars are were you go to first interact with someone you find, rather than going there to find someone.