There are many open kineto proxies, and google is indexing geminispace 
via them. Probably other indexers are too. I'm not sure if that should 
be considered a problem in itself, but what is a problem is that it 
bypasses gemini sites' robots.txt file, since of course the web indexer 
doesn't know to request those files via the proxy.

So I suggest that kineto should by default serve a robots.txt file which 
disallows everything.

This was recently discussed. The answer was "yes, send a patch".