Hi anthony - the current script repository is on Petr's page here:
http://kyticka.webzdarma.cz/3d/moi/

The majority of scripts are listed there, there may be a few that are not up to date though.

In the future I do want to make an "official" centralized script repository but instead of having it as just a regular web page I want to make it a web service that you would connect to and browse from within MoI so that you could do something like click a button to install one of the scripts rather than needing to actually download it separately and install it manually.

I'm not sure yet exactly when that will happen though, hopefully at some point in v3. But it's possible it could get postponed if I get really focused on higher priority tasks like some kinds of new modeling tools.

- Michael