Googlebot trying my search form?

Seeing many searches by googlebot

[johnnie]

Hello, in my textpattern referral logs I am seeing the following:

<snip>
14 dec 2007 04:51:11 66.249.65.236 crawl-&#8203;66-&#8203;249-&#8203;65-&#8203;236.&#8203;googlebot.&#8203;com?&#8203;q=rovers&&#8203;results=1 GET 200
14 dec 2007 04:49:24 66.249.65.236 crawl-&#8203;66-&#8203;249-&#8203;65-&#8203;236.&#8203;googlebot.&#8203;com?&#8203;q=uitziet GET 200
14 dec 2007 04:47:42 66.249.65.236 crawl-&#8203;66-&#8203;249-&#8203;65-&#8203;236.&#8203;googlebot.&#8203;com?&#8203;q=pluto GET 200
14 dec 2007 04:45:59 66.249.65.236 crawl-&#8203;66-&#8203;249-&#8203;65-&#8203;236.&#8203;googlebot.&#8203;com?&#8203;q=barbara GET 200
14 dec 2007 04:44:18 66.249.65.236 crawl-&#8203;66-&#8203;249-&#8203;65-&#8203;236.&#8203;googlebot.&#8203;com?&#8203;q=viert GET 200
14 dec 2007 04:42:35 66.249.65.236 crawl-&#8203;66-&#8203;249-&#8203;65-&#8203;236.&#8203;googlebot.&#8203;com?&#8203;q=ontdekt GET 200
14 dec 2007 04:40:54 66.249.65.236 crawl-&#8203;66-&#8203;249-&#8203;65-&#8203;236.&#8203;googlebot.&#8203;com?&#8203;q=russische GET 200
14 dec 2007 04:39:12 66.249.65.236 crawl-&#8203;66-&#8203;249-&#8203;65-&#8203;236.&#8203;googlebot.&#8203;com?&#8203;q=uitstrekt GET 200
14 dec 2007 04:37:29 66.249.65.236 crawl-&#8203;66-&#8203;249-&#8203;65-&#8203;236.&#8203;googlebot.&#8203;com?&#8203;q=periodieke GET 200
14 dec 2007 04:34:05 66.249.65.236 crawl-&#8203;66-&#8203;249-&#8203;65-&#8203;236.&#8203;googlebot.&#8203;com?&#8203;q=afneemt
</snip>

And a LOT more searches. Since when does googlebot use your search to find content? Can I use these keywords as a 'tip' from google for which keywords it needs more relevant content?

[Tastatura]

To the best of my knowledge googlebot will not just try to insert (random) search terms in your form and perform searches (as humans do). If in fact this is googlebot [webmasterworld.com] then it's simply looking up urls found someplace else on the net. Someone either made links to your site using these search terms, or someone/something is feeding those urls to G.