i dont think this would be to hard to make and it would be kinda funny. mkay you know how when someone starts typing something to you it tells you at the bottom of the window. this obviously implies that some data is sent before the actual message. what i would like is a script that blocks them as soon as they start typing, but as soon as they delete what they were typing (ie the such and such is writing you a message thing goes away) then it unblocks them again, thus it would appear as your only online when there not talking to you.

HaHa!

I think this is a great idea for a script and i would like this too it would really annoy some of my contacts.

It's been suggested and possibly even made before. Do a search.