[MobiusHorizons]

I think the question is “how are the behavior of random spammers on your search page getting picked up by the crawler”? The assumption with cache is that searches of one user were being cached so that the crawler saw them. Other alternatives I can imagine are that your search page is powered by google, so it gets the search terms and indexes the results, or that you show popular queries somewhere. But you have to admit that the crawler seeing user generated search terms points to some deeper issue.

[weird-eye-issue]

You just link to that page from a page that Google crawls. Cache isn't involved unless you call links caching

[MobiusHorizons]

Ah that makes sense, thanks for clarifying.