Since top-level domains were assigned to each country, several governing bodies saw fit to make a quick buck off the incidental semantics of the two-letter country codes. However, this activity only confuses the intent of the domain name system that the Internet-using public at large is only just beginning to grasp:

Et cetera. Moreover, it just looks tacky.

Additionally, the top-level domains .biz and .info are generally regarded as being those domains that you lease when you can't get .com, as well as a haven for fly-by-night operations that advertise by spam. It is recommended that they only be leased to prohibit others from squatting on them.