- There is only a very short supply of them, and relatively speaking (2626x, where x = number of TLDs), the total number is easily within the lower ten thousands. - They're super easy to remember, and quick to type for customers/visitors. - As someone who's worked in I.T., if given the choice for an "internal" domain, I'd choose (and have chosen) a two-letter domain all day long. It's way less typing and makes configuration of devices much easier... so why haven't others thought the same way... - Since there are so few, and they are special by nature, why aren't "domain sharks" scooping them all up and trying to resell them for a profit? - Most of them cost the exact same amount as a standard domain name
So yeah, I'm just curious as to why they're apparently not nearly as appealing as longer domain names. I understand that it's hard to put a business/organization name into 4 letters, but still, I'd think that there are at least a few thousand geeks out there like myself who'd want to have one or two.