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Mozilla/5.0 (Windows NT 6.1; rv:10.0.2) Gecko/20100101 Firefox/10.0.2

Mozilla/5.0 (Windows NT 6.1) AppleWebKit/535.19 (KHTML, like Gecko) Chrome/18.0.1025.162 Safari/535.19

Mozilla/5.0 (Windows NT 6.1) AppleWebKit/534.50 (KHTML, like Gecko) Version/5.1 Safari/534.50

Opera/9.80 (Windows NT 6.1; U; en) Presto/2.9.168 Version/11.50

Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)

REFERENCES
http://stackoverflow.com/questions/12288452/what-does-mozilla-5-0-in-user-agent-string-signify

ERROR:

[Errno 14] PYCURL ERROR 22 - "The requested URL returned error: 404"