轮子可能会绑架你的PC。比如去年奥运期间一些使用他们软件的用户不知不觉地成了他们在YouTube上的Video Promoters。更要命的是他们出卖自由门，世界通和火凤凰软件的用户数据。

DynaWeb FreeGate, GPass, and FirePhoenix Sell User Data.

http://rconversation.blogs.com/rconversation/2009/01/circumventing-c.html

Q: I am interested in more detailed and in-depth visit data. Are they available?

A: Yes, we can generate custom reports that cover different levels of details for your purposes, based on a fee. But data that can be used to identify a specific user are considered confidential and not shared with third parties unless you pass our strict screening test. Please contact us if you have such a need.