Many of them will be Facebook friends, or follow each other on Twitter, or be Linked In.
But being in the same room as someone, sharing a joke about your boss or the latest pitch anecdote, can be liberating.
(So can belting out Cher songs, but that's a whole other story.)
If you're in London on Thursday, and work agency-side in technology PR (whatever that means nowadays), pop in and have a beer with us. Email me for the address.
As usual, it's DWPub's round. Every round.