After a ton of reading and research I've come to the lesser argued opinion that .co domains can be worth some real dollar. There are still plenty of big name .co's out there to be snapped up for as little as $7 a go, so what can possibly go wrong? I don't have any experience in selling domains tho and the research suggests that the transfer can be a little tricky! Would like to read everybody's views, would love to read the views of a seasoned domain re-seller. Ben.
Check out how .CO domain extension doing so well this few years . http://sociable.co/web/two-years-on-how-is-the-co-domain-doing-infographic/ It can be said that .CO domain now is better choice then .net, .org, .biz and .info and it show more valuable after .com domain name. You can see lot of .co domain reseller start earning big bucks other than .com . When .com keywords domain is limited and everyone start offer .net and .info but thing come wrong while more people prefer .co domain name to replace .com domain name.
Thanks very much guys, some good info in those two links! Definitely regretting my investment in .ws domains now d'oh.