What I do is;
Take the deck out and start to shuffle, focus my mind and "circle" the screenname and the question in my mind, along with any other relevant info the person I'm doing the reading for has deemed relevant. Everything else is just deemed as passing, unless something catches my intrest in relation to the question in which case I take a mental note of it to see if it holds relevant as I do the reading.
When I feel that the deck is "ready", i.e. I feel focused enough, feel that the cards have been "shuffled into place" I do the reading and take notes as I do it to not forget anything as I type it up on the computer.
Sometimes I type it out as I do it if I'm seated by the computer at the time.
I've recieved readings that are very spot on. Also, judging from the feedback I've recieved I've managed to do a few accurate readings too.
So, in my experience it definately works.
I don't know if any actual connection is made, but sometimes I do feel a "presense" of sorts that i percieve to be representative of the person I'm reading for, though it could be a guide, a focuspoint created in my mind or any other number of things aswell.