The following is the best answer about LJ's impact on my love life:
I've had sex with and/or a romance with someone I met initially via LJ.
There's one or more folks on LJ I'm after, but nothing's happened yet.
I'm married or otherwise off the market enough so that even the prescence of David Bowie on my friends list would not count as a temptation.
I would never use LJ as a medium to meet dates.
I would date someone I met via LJ, but there's no one I've found via LJ thus far that I have any interest in.