There are 3rd party tools that let you do this, like Disqus. Otherwise you can enable anonymous commenting, I'm not sure off the top of my head if commenting is indexed for searching, you'd need to test. For making nodes, if you want that could also be permitted for anonymous.

Info Razor

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On Wednesday, April 10, 2013 at 7:48 AM, steven@vermoere.net wrote:

Hello,

I'm looking at a way that it is possible that (anonymous) users enter some
data in predefined fields. The result is shown and searchable on the
website and everybody can give comments.

It must be moderable. You must be able to open and close the questionaire.

How can I tackle this ?

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