That's awesome. Their site has withstood the test of time design-wise. For the most part it looks like any other good modern site: clean and simple. It's remarkably free of the classic 'made-in-the-nineties' characteristics. I guess that goes back to the viaweb team's aversion to 'fashion'.
The "Over 1000 Users!" thing actually looks like it could be on the BaseCamp website. It's the bright pastel highlight thing before it was hip.
I agree we can learn something about design from the whole thing. The simplicity means that it holds up strikingly well. The only thing that really dates it is the image buttons and image bullets. Nice job, Paul, or whoever did the design. It's really very nice.
Once I get my app launched it'll be mostly free accounts w/ advertising and some pro accounts. With competition I'll have to get quite a few users to make anywhere near what they were making!
My favorite part is:
"Over 1000 Users!"