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1. A method for targeted web content modification, comprising:
a network service provider determining whether a web content request from an internet user station is a first-type request or a second-type request; if the web content request is a first-type request, then forwarding the first-type web content request to the internet; otherwise, if the web content request is a second-type request, then: tunneling the second-type web content request to a content modification station, wherein a one-directional tunnel is used for tunneling the second-type content request to the content modification station; and if the tunneled second-type web content request meets a criteria for modification, the content modification station responding to the tunneled second-type web content request by forwarding to the internet user station a redirection for causing the internet user station to send a new web content request to the internet wherein the internet user station receives modified web content based on the new web content request, and otherwise, if the tunneled second-type web content request does not meet a criteria for modification, the content modification station forwarding the tunneled second-type web content request wherein the internet user station receives requested web content, directly from the internet and not from the content modification station, based on the tunneled second-type web content request.
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