We at Clusty don't track you. Our toolbar doesn't track you. We don't want to know your email address.
Code:
http://clusty.com/privacy
Quote:
Clusty is intended to be an anonymous service. We do collect limited non-personally identifying information that your browser makes available. This log information includes your Internet Protocol address, browser type, browser language, referral data, the date and time of your query and one or more cookies (described below) that may uniquely identify your browser.
