Breadcrumbs is a personal search engine for your browser. Breadcrumbs saves your visited pages and allows you to search your pages from the search toolbar. It stores data locally to protect your privacy. Breadcrumbs also allows permanent offline browsing.
A quick HOWTO guide can be found at http://davidkellogg.com/blog/?origin=moz_bc
Now, with networked search, you can search several computers at once. Add friends' computers and search the collective wisdom of their browsing.
Breadcrumbs records your web pages as you browse and allows you to search them from anywhere. You can easily find webpages that you forgot to bookmark. Breadcrumbs security allows limited access through password protection.