[antileet]

Despite it being shorter, it seems more awkward to type and sometimes seems more prone to error. Not to mention how it might affect your standing with search engines.

Remember when http://delicious.com was http://del.icio.us When I first saw the product, I thought the name was "icio".

[jmreid]

Couldn't agree more. I found it awkward to type—I could never remember what part of the word 'delicious' was the domain. deli.cio.us? de.licio.us?

This is why people just go to Google and type in the domain they want. If you're off by a character or two you still get to the site without a 404.

[there]

for what it's worth, delicious was del.icio.us for 4 years and only became delicious.com 2 years after yahoo bought the site for many millions of dollars.