Or find a site in the search engine, click it, and the site is gone. Yeah, this is very frustrating.
People seem to change e-mail addresses much too often.
This is where you set up a free e-mail address, and have that address forward to your actual POP mailbox. This way, you give people your free address to everyone, and it stays permanent. Genealogy is a subject that really comes alive with alot of people involved. People move around alot. And with the ever changing face of the net, there are going to be a number of times that people will move their sites and e-mail addresses.