Use technology to stay private, online
If you do not want the content of your e-mail messages examined or analyzed at all, you may want to consider lesser-known free services like HushMail, RiseUp and Zoho, which promote no-snooping policies. Or register your own domain with an associated e-mail address through services like Hover or BlueHost, which cost $55 to $85 a year.
Another shrouding tactic is to use the search engine DuckDuckGo, which distinguishes itself with a "We do not track or bubble you!" policy. Bubbling is the filtering of search results based on your search history. (Bubbling also means you are less likely to see opposing points of view or be exposed to something fresh and new.)
Regardless of which search engine you use, security experts recommend that you turn on your browser's "private mode," usually found under Preferences, Tools or Settings. When this mode is activated, tracking cookies are deleted once you close your browser, which "essentially wipes clean your history," said Jeremiah Grossman, chief technology officer with WhiteHat Security, an online security consulting firm in Santa Clara, Calif.
Shielding your I.P. address is possible by connecting to what is called a virtual private network, or V.P.N., such as those offered by WiTopia, PrivateVPN and StrongVPN. These services, whose prices price from $40 to $90 a year, route your data stream to what is called a proxy server, where it is stripped of your I.P. address before it is sent on to its destination. This obscures your identity not only from Web sites but also from your Internet service provider.
-- Muddy Waters