From now until the end of 2011 you can use a .CO Domain Coupon to obtain as many CO Domains as you like for only $13.99.
.CO Domain Coupon
.CO Domain Coupon Code: co1399
Deal: $13.99 .CO Domains
Many online businesses utilize this domain extension for their only URL or to use as an additional branding tool. Businesses such as Overstock (O.co), Google (G.co), Twitter and others. Anyone can use the above .CO domain coupon.