I couldn't agree with you more! You all the time see domains up for sale that mean absolutely nothing like:
0ss.com
j01.com
mdq.org
tah.net
u1a.net
w0g.com
w0g.net
21ct.net
4ran.com
6565.biz
69zy.com
923p.com
What's the point? Just because there are few characters, doesn't mean more visitors. The name actually has to "mean" something. Like the name of this site for example. "AdminBuzz" says it all don't you think? "Buzz" is a perfect sales and marketing term that says a lot without having to actually say alot.
I guess that's why all of these names are for sale.
I don't think they're worth much.
I invite someone to prove me wrong.