For some reason, a '.com' domain nearly always looks more reputable than an alternative. Some people even expect it. Furthermore, '.co' might be confusing. It looks like it might be typo. I don't know what domain you want, but it might be worth your time thinking of an alternative. Otherwise, '.net' is better than '.co' in my opinion.
1) come up with a clever (must be easily memorable) variant which is available as .com. Be careful how you search as I've read about situations where the domain gets parked upon an inquiry. I just use whois & dig from the command line.
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For some reason, a '.com' domain nearly always looks more reputable than an alternative. Some people even expect it. Furthermore, '.co' might be confusing. It looks like it might be typo. I don't know what domain you want, but it might be worth your time thinking of an alternative. Otherwise, '.net' is better than '.co' in my opinion.
Two more options:
1) come up with a clever (must be easily memorable) variant which is available as .com. Be careful how you search as I've read about situations where the domain gets parked upon an inquiry. I just use whois & dig from the command line.
2) perhaps .biz or .info would work.