Say someone you met on Internet Dating (and enjoyed spending time with) but for various reasons couldn't enter into a relationship with at present, messaged you...
Would you
A: reply with fairly long answers/questions back to them for the sake of politeness
B: not reply at all if you weren't interested
C: reply disinterestedly, to try and limit attempts at further conversation
Just a straw poll as I'm not sure what constitutes leading someone on...!
(Of course the thing with internet dating is that neither of you has any need to see the other IRL again - so you can be as blunt as you like I'd imagine)