The general rule on about people on IRC seems to be "Attractive, single, mentally stable: choose two"
Anyway, photoshop filters are unnecessary, you can obscure your true appearance easily enough with creative photography. Shoot a picture of yourself in a mirror, with only a single candle for light. Send a picture of your toes. Make the picture so huge that your left eye takes up the entire window (cough Jessicapierce cough). You get the idea. If you must photoshop (or gimp) it, run an edge detect on the picture. You'll look like an outline drawing.