Parent Hacks admin: Trackback moderation
Just an FYI, I've started moderating my trackbacks to stem the tide of spam (ew...tide of spam...horrible image. Sorry.). So, don't worry if your trackback doesn't appear right away -- it's just waiting for my approval, which I generally provide within hours. Unless you're an evil spammer, in which case I dispose of you. Bwaa ha ha ha!
If you're not sure what trackback is or how to use it, let me know.