All platforms with Firefox: SafeCache bolsters your browsing security by preventing cache-based monitoring schemes. Developed by Stanford University faculty, SafeCache silently prevents you from being traced through your cache. Enjoy the geektastic explanation:
SafeCache [via Security Hacks]
</img>
More...
Through a variety of means, including a range of browser cache methods [...] client-side browser state can be exploited to track users against their wishes. This tracking is possible because persistent, client-side browser state is not properly partitioned on per-site basis in current browsers. We address this problem by refining the general notion of a "same-origin" policy and by designing and implementing [...] browser extensions that apply a same-origin policy to the browser cache and visited links.
SafeCache is a free download that works anywhere Firefox does.SafeCache [via Security Hacks]
More...