.info isn't a very popular extension at the moment.
coolinks.info can be quite easily confused with coollinks.info. Unless you own both domains, then it isn't too bad as either way they will be able to reach the same content.
First impression is ok. First time reading it sounds kinda weak. However, I just did a google on it. It looks like there is a cooler brand name called Coolink. But then again, a company name will be better off using a .com than .info. Before I searched, I thought it would be pretty nice to use for directory links. You can use it either for a link directory or cooler related information.
Undeveloped content: Reg fee
Developed content: low $xx
Good luck. Just my personal opinions. Please do not get offended.