The Groups site is intended as a "community-driven" site, meaning that I don't run a linkchecker daily, email the heads of all the groups, or attend all of these personally (I do attend a couple of these, Updates are simple: send me new information. If you're listed as a contact person and you don't want to be, send me mail at burnett@pobox.com and I'll take you off. If there's someone else who's a better contact person, have them send me mail and I'll include them. If your group gets a website, or moves, let me know and I'll update the link.
I used to include telephone numbers for contact people if they didn't have an email address back when this site was first launched, but have since removed them as unnecessary. Thanks in advance for the help.