[epi0Bauqu]

The plugins get approved by DuckDuckGo, and generally we work with people to make them good or round them out ourselves. In the future there may be a way to install them in addition (for say, the ones we aren't using for the whole site).

We have a bit of an answer for conflicts on this in the FAQ: http://duckduckhack.com/#faq

"What if there are plugin conflicts? The ultimate arbiter is the user, and that's the perspective we take, i.e. what is best for the user experience? That said, often times it makes sense to combine ideas into one, better plugin."

[mburshteyn]

It'd be great to let users download plugins. There might be small communities that do regular searches where certain instant answer hacks might not make sense to the vast majority of users.

[crazedpsyc]

You can download plugins from github, but note that they are under GPL as far as I know. EDIT: Nope, perl5 license.