This is just my advice, but I'm not your average computer geek...I mean, I AM one, let's not confuse the issue...well, nevermind.
I would call out the toughest of the bullies and kick his @ss all over the place...I've done it before (twice), it works very well. Only thing is, you HAVE to win!
Otherwise, um...don't walk home alone!
EDIT: Well, in some cases it may be okay to lose...some punks respect the fact that you didn't chicken out. Trust me, the more you run, the more they're going to want to chase you.