i was having some high-load issues on my server, and my admin made several changes... one of which was to set the max number of simultaneous requests per IP to 14. this seems like a safe limit (allows legit users to access server, but disallows excessive users).
the server gets about 50,000 unique users per day.
is 14 a good limit? i dont want to "offend" any search engine spiders or wouldn't want any "this page cannot be displayed" messages to legitimate users.