So my advice, be kind, be polite, show respect, and if the lady doesn't respond then don't bother her. She is either A) busy, under attack by many jerks and so in a bad mood and you really don't want to feel her wraith, or C) she doesn't have enough personality to be worth your time or have fun in the room (which is what all those blank profiles are about I think).
Other than that, have fun.
I couldn't agree more to this. I my limited experience, respect and don't pester them. If they want to talk they will if not then move on to someone who will talk or can speak the language.