I found it is very tedious or even annoying for users and developers to register an account for each MetaWiki site they encountered.

Take myself for example: 1. First, I got an account from wikipedia, that was my first visit to wiki in fact.

2.Then, I found metawiki, was asked to register. Ok, I was still happy to do it to be a more involved volunteer.

3.After that, I found the chinese version of eikipeida. I always wanted to contribute to my own people. I registered an account there without reluctance.

4. Today, I want to add my new feature request and bug report. You know what? A MediaZilla poped out requesting me to register again!

5. I suspect if I happen to access wikidictionary, wikibook, and so on, I have to register again and again...

I don't know how many people have the same problem as me. But wouldn't it be better to have a single account to access all sites within MetaWiki? I know there is a passport project from Microsoft dealing with the similar problem. It would be much easier for us to do the same thing within MetaWiki because we don't need to worry about the identify,money issue in the real world.