That is the common going away message at SXSW this year for those who follow each other and communicate on Twitter.
Chances are re-meeting that person or developing a tighter relationship are slim. “See you on Twitter” is a nice way of saying, “I like what you have to say and will keep listening but I don’t necessarily need to see you again.”
Twitter relationships are only as meaningful as you make them. You must follow up with the person if you want to cultivate a real relationship.
PS: Thanks to Hugh MacLeod for blogging my picture of his Rackspace artwork. We’ve never met face to face but thanks to Twitter at least he knows I exist:)