I have posted available 2 letter domain names (at the time of my posting). Register them if you like. 1) Why I am not registering? I already got about 4 two letter domain names myself. 2) Why should I register 2 letter domains? These are getting rare nowadays and adamsnames have reserved 2 letter domains for .vg, .ms, .tc for $500 . .st company asking more than that. (EU 999) 3) You could tell other people " I have 2 letter domains, it is actually impressive" 4) It is up to you to decide to register or not, I have nothing to do with it. Available 2 letter domains are: GH.GS OX.GS UI.GS For OX.GS, it is quite good esp if you are dealing with OX, dictionary 2 letter domain. GS could mean "General Service". "General Support". You may register at iDotz.Net . If you register them, post here as other people will know those domains no longer available.
Are you sure you went to the right registrar? Only iDotz.net allows you to buy 2-character .gs names. I've got 4 through them. If you're registering more than 2-characters, I'd go with Moniker as they are cheaper.
And to clarify, on iDotz you have to specifically pick .gs before looking up the domain, because they will only do the search on an extension in which you can register 2-letter names. Since when you go there it defaults at .com, it won't search if you just put the term in.
Owning numbered domains with a "0" at the start of it is of lesser value than others that have premium numbers, but numbered 2-character domains are even rarer than lettered domains.
Here's a list of available a-character NN.gs. http://forums.digitalpoint.com/showthread.php?t=267155 I haven't checked which ones are taken for a few days, so some might be taken.
There are a few 2 letter domains left, far more than that list. My dream domain was gone saddly eg.gs .