From krebsonsecurity.com, an interesting blog about the new wave of adware being slipped in as browser extensions (frequently using Crossrider apparently). Check out the privacy policy of an extension called IWantThis!:

"Examples of the information we may collect and analyze when you use our website include the IP address used to connect your computer to the Internet; login; e-mail address; password; computer and connection information such as browser type, version, and time zone setting, browser plug-in types and versions, operating system, and platform; the full Uniform Resource Locator (URL) clickstream to, through, and from the Site, including date and time; cookie; web pages you viewed or searched for; and the phone number you used to call us."

Full story here