I can believe Hume reads FR. I would guess Tony Snow continues to lurk here as well. If nothing else, FR provides these guys with a pulse of grass roots activists they don't hear from the MSM.
Tony's account is still active, though he doesn't post and all of his old posts have been pulled. I still ping him on some items in case he still checks in. I would actually bet that he and Brit, along with lots of other folks, have interns or aids who get the duty to browse through FR (and DU and other places) from time to time. I'd bet they also have keyword bots running against us and a lot of sites looking for specific topics and references.