As we discussed in "Live Chat", unless you're looking to protect your brand and depending on the exact domain name(s), registering extensions such as the ".TV", ".CC", ".WS", etc. would
not do much good as providing for more value, etc. IMHO.
Certainly, the ".US", ".INFO", ".BIZ", ".NET", ".ORG" could bolster your presence, features, usability, even potential worth of the core ".COM" domain, IMHO. A lot could depend on the specific domain name ... but, generally, I would subscribe to the above.
