I'm going to begin by apologizing if this comes off as harsh, but are you absolutely certain that you're being ignored? I only ask because you complained in the shoutbox about everyone ignoring you when, in actuality, nearly everyone responded to you and you chose to ignore THEM in order to continue wallowing in self-pity. Perhaps the problem stems not from the world ignoring you, but from you selectively ignoring the parts of your life that could satisfy you because you're in a phase of life that tends to promote self-pity as some sort of deep introspection that compliments their tendency for mild narcissism.
If this is truly a legitimate issue in your life I would advise you to look for friends rather than girlfriends. Friends will help you with your loneliness. Friends will be significantly less pressure than attempting to find a relationship. Friends can turn into lovers at a later time. I'd also suggest that you look for these friends outside of your regular circles. Getting out and meeting new people and trying new things will help improve your confidence because you'll see that you can adapt to new situations and you'll get the kind of ego-stroking gratification that can really only be satisfied by meeting a new friend.
I hope things improve for you