Originally Posted by fadedc
I've been known to do the silent invite to someone who is clearly waiting for a quest mob to spawn. That's a time sensitive activity and you don't want one of you to lose credit for the kill. Inviting them is just much faster then sending them a tell and waiting for a response.
But yeah there's definitely somewhat of a shift still. The main bonds in modern MMOs are with your guild rather then random people you run into. Personally not only have I gotten to know many people in my WoW guild, but I've also met several in person for a drink when they have come to my area. I'll take that over internet small talk while sitting in one place for hours waiting for goblin #2,457 to spawn any day.