URL-shortening service bit.ly, the favorite of Twitter, has introduced a new URL-shortening service, or an extension of the original one rather. The new one is j.mp, which as you can see by looking at it resides at a domain with very few characters.
That is exactly the reason bit.ly has introduced it. The company says that for some people, "every character counts," and that is certainly true in the Twitter age, where a maximum of 140 characters is allowed per tweet.