In reply to Arūnas Liuiza.

There are ~34 current Jetpack modules. It seems like a form or survey in which not only can users vote on already known plugins for any of the 34... but also add a new plugin to the list which can be voted on. Some sort of a self-growing array represented by radio inputs.

The result would be not only a wide sampling of recommendations... but also some feedback about which are more popular and widely used.

As I think of it, though, i'm not aware of any form service or plugin which allows users to add an item to the list of available choices.
Interesting idea.