The LII family of legal resource pages (eg WorldLII) are your best bet when doing online legal research, but it would also be handy to have a targeted search engine that searches sites you’ve specified. The new Google Custom Search Engine (CSE) fills this niche. check out an example I created here

The CSE is configurable to search only sites that you choose, or to search all sites but give preference to sites of your choice in returned search results. When adding new sites, you can also assign annotations to specific sites that allow you to refine data by that annotation. As an example, by assigning ‘Australia’ to the Austlii site, the search returns will give preference to search returns from the Austlii domain over those from other domains when returning results if the ‘Australia’ refinement is selected.

With ‘Australia’ refinement on:

Without ‘Australia’ refinement on:

The CSE lets volunteers add new sites to the ambit of the search engine. If any of you want to volunteer to become collaborators, you can do so by clicking here. (Note: you will need to have a Google account before becoming a collaborator)

Another nice feature of CSE is that it can be embedded in any webpage. (For example, here) You can also specify whether to have search results return in a normal Google search page or embed them in a page on your own site

The ‘Google Marker’ tool is a link that you can add to your links toolbar that allows you to add a new site to your search engine just by clicking the link whenever you come across an informative site. A new window comes up confirming that you want to add the site and lets you add any annotations to the site as well