Http Prefetching
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Link prefetching FAQ - MDC
What is link prefetching? Link prefetching is a browser mechanism, which utilizes browser idle time to download or prefetch documents that the user might visit in the near future. A web page provides a set of prefetching hints to the browser, and after the browser is finished loading the page, it begins silently prefetching specified documents and stores them in its cache.
Disable the Firefox Prefetch Setting
Did you know that Firefox has a feature called “prefetch” that caches pages that it thinks you are going to click on? This can slow down system performance. Here’s how to disable the Firefox prefetch setting.
Fasterfox - Performance and network tweaks for Firefox.
Dynamic speed increases can be obtained with Fasterfox's unique prefetching mechanism, which recycles idle bandwidth by silently loading and caching all of the links on the page you are browsing.
Blog: DNS Prefetching (or Pre-Resolving)
A major goal of Google Chrome was to improve user enjoyment and value in web surfing. Critical to that is increasing the responsiveness of the browser to user input, or reducing user perceived latency.
DNS Prefetching (The Chromium Projects)
Browser Startup Chromium automatically remembers the first 10 domains that were resolved the last time the Chromium was started, and automatically starts to resolve these names very early in the startup process. As a result, the domains for a user's home page(s), along with any embedded domains (or anything the user "always" visits just after startup), are generally resolved before much of Chromium has ever loaded.