Sadly, the Network Solutions page linked to is inaccurate and misleading.

Those that wish to be taken seriously shouldn't refer to TLDs as "extensions". Neither should they suggest that ISO country code TLDs such as "us" are in any way "new".

The "biz" and "info" spaces are chock full of spammers and other low-life. Not a neighborhood that any legitimate domain owner should care to inhabit, aside from simply claiming their brand with a wildcard redirect.

richi.
www.richij.com