A good example I can think of is the website for an Australian artist I worship named Paul Kelly,
www.paulkelly.com.au.
Now, I know most of you have not ever heard of Paul Kelly, which is a crying shame; he's often compared to Bob Dylan (though I'd compare him more to Townes Van Zandt or Steve Earle) and has won several ARIA Awards [the Australian Grammy.] He tours often in the U.S. and was just here with the Aussie band the Waifs....anyway.
His website is run by a dedicated volunteer, Eva Blanda, who also administers an official listserv that gets the news out to the fans quickly. Seems like she picks up a lot of info from Paul's record label, Mushroom, based in Sydney.
Another example might be Henry Rollins; although the man is well-known for his verbosity (he writes journal entries for his website
www.henryrollins.com everysingleday) his production company also does a good job sending out emails, updating the News section, and whatnot.
I hesitate to even mention any of this, because I think Gio is AWESOME and works his little fingers to the bone updating this place, but as you mention, the PR and record companies and agents might be able to do a little better job hooking him up (and us, consequently) with timely info.
Just a little constructive criticism, and let me know if I can help (I administer three or four Yahoogroups and would be glad to set one up. Unfortunately I'm a doofus who can't run FORTRAN, or I'd offer to set up a Unix-based email list...though I might have some hookup with nerds for hire who'd do it for us.)