Smartscreen built into IE does somthing similar
It' s on by default in IE8 and IE9 and there must be millions of people still using it.
When you use SmartScreen Filter to check websites automatically or manually, the address of the website you are visiting will be sent to Microsoft, together with standard computer information and the SmartScreen Filter version number. To help protect your privacy, the information sent to Microsoft is encrypted. Information that may be associated with the address, such as search terms or data you entered in forms might be included. For example, if you visited the Microsoft.com search website at http://search.microsoft.com and entered "Seattle" as the search term, the full address http://search.microsoft.com/results.aspx?q=Seattle&qsc0=0&FORM=QBMH1&mkt=en-US will be sent.
Address strings might unintentionally contain personal information, but this information, like the other information sent, is not used to identify, contact, or target advertising to you. In addition, Microsoft filters address strings to try to remove personal information where possible. When you use Internet Explorer to download a program, SmartScreen Filter will send the information above, along with information about the downloaded program, such as a file identifier (a “hash”), results from installed antivirus tools, and the program’s digital certificate information, if available.
Periodically, information about your usage of SmartScreen Filter will also be sent to Microsoft, such as the time and total number of websites browsed since an address was sent to Microsoft for analysis. Some information about files that you download from the web, such as name and file path, may also be sent to Microsoft. Some website addresses that are sent to Microsoft may be stored along with additional information, including web browser version, operating system version, SmartScreen Filter version, the browser language, the referring webpage, and information about whether Compatibility View was enabled for the website.
A unique identifier generated by Internet Explorer is also sent. The unique identifier is a randomly generated number that does not contain any personal information and is not used to identify you. This information, along with the information described above, is only used to analyze performance and improve the quality of our products and services.