I really don’t know what happened to browsershots.org. It seems pretty dead, which is really sad since it was a great way to see how websites I worked, look on platforms I was not very likely to be accessing in RL.
Oh, well. I found that Adobe is offering similar service (although not as extensive as browsershots.org).
browserlab.adobe.com
Registration is required. I used my “regular” Adobe user name and password and that was good enough.