In seo perspective

perhaps there would be a way to not display results for search engines/bots?

werushka:
Can you elaborate on why you would not recommend this module for SEO?
It's hard to disagree with your opinion when the reasons for it are not stated.

Subscribing, greetings, Martijn

@werushka - Do you have more information about this?

it can offer a possibility for black hat seo:

anyone can create a page with a endless links pointing to one site (and aiming for it's search404) then the user (and any robot / searchengine crawler) get's more or less the same page - so this could be negative from a SEO perspective - and you nearly can't fix this with the robots.txt, because you can't estimate the path …

or did i miss something?

I think it's an important distinction that Search 404 returns an HTTP 404 response code along with its results, or a 301 redirect if a single hit was found.
Does this not help distinguish a Search 404 site from a content farm?
A content farm would return a 200 response, pretending that its results were legitimate.
Aren't searchbots smart enough to distinguish between response codes?

I'm not well versed in SEO, so I'd appreciate your thoughts about this distinction.

#6 you are right i checked the http-header: 404 !

(indeed, sorry … did not checked the header)