Usually we have referrer URLs go with a good domain name. My question is: Why a referrer shows "http://tv/wiki/".... ? And it is not a good domain? Or How does it possible to have a referrer like this? Or Who is crawling? Thanks,
The referrer is part of the HTTP Request Header (HTTP_REFERER is the exact header). Anyone crafting a HTTP request can set the referer to whatever they want. I'm guessing this is a bot, spider, or whatever, and is hardcodeing the HTTP_REFERER to http://tv/wiki. Possibly this is just a bug on their part, at any rate, you can look at the IP addresses associated with these requests and see if you can find out who they are that way.