I'm sorry for just posting links as of late - I have some posts brewing in my mind that will need time to be properly composed... and I have school work to do, unfortunately.
In the meantime, enjoy this post by yubchur on ShidduchDater about Facebook shidduchim/dating research etiquette (yes, I realize it's from Thanksgiving, but I just found it). I think he's pretty much on target.
I will hopefully have something new posted in the coming week. Until then, have a Lichtegen, Freilechen Chanukah!