Is is possible that geocaching.com being taken down had something to do with
the article on slashdot.org that was posted last week?  It's not uncommon
for sites to go down under the increased traffic load after appearing on
slashdot.
 
If you haven't read the thread yet, you can find a link to it on the main
page of azgeocaching.com.  It's a good read.
 
LazyK - Dan