These are sent by the browser to the web server. Based on these I think you are using:
User Agent: ccbot/1.0 (+http://www.commoncrawl.org/bot.html) Browser: Unknown Version: 0 Platform: *nix OS: mpras Language: en-us,en HTTP_ACCEPT => text/html,application/xhtml+xml,text/xml;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5 HTTP_ACCEPT_CHARSET => ISO-8859-1,utf-8;q=0.7,*;q=0.7 HTTP_ACCEPT_ENCODING => gzip HTTP_ACCEPT_LANGUAGE => en-us,en;q=0.5 HTTP_CACHE_CONTROL => no-cache HTTP_CONNECTION => close HTTP_HOST => www.intermain.org.uk HTTP_IF_MODIFIED_SINCE => Mon, 09 Aug 2010 10:11:28 GMT HTTP_PRAGMA => no-cache HTTP_USER_AGENT => CCBot/1.0 (+http://www.commoncrawl.org/bot.html) HTTP_X_CC_ID => ccc02-01 REMOTE_ADDR => 38.107.179.220 REMOTE_PORT => 45859 SERVER_ADDR => 212.69.198.25 SERVER_NAME => intermain.org.uk SERVER_PORT => 80 SERVER_SIGNATURE => <ADDRESS>Apache/1.3.41 Server at intermain.org.uk Port 80</ADDRESS> SERVER_SOFTWARE => Apache/1.3.41 (Unix) (Red-Hat/Linux) PHP/5.2.9 with Suhosin-Patch mod_ssl/2.8.31 OpenSSL/0.9.8j-fips FrontPage/4.0.4.3 UNIQUE_ID => Ty7YKdRFxhkAADHXGPw GATEWAY_INTERFACE => CGI/1.1 SERVER_PROTOCOL => HTTP/1.1 REQUEST_METHOD => GET QUERY_STRING => REQUEST_URI => /john/browserinfo.php SCRIPT_NAME => /john/browserinfo.php PHP_SELF => /john/browserinfo.php REQUEST_TIME => 1328470057