It seems that Google Chrome no longer supports the OpenSearch standard.. so the Mycroft Project plugin no longer works.. <sigh> So much for "Don't be evil".. (oh wait, that's right, the motto -and principle- had to go, because it was interfering too much with maximum financial gain)
Anyhow, having just today discovered this latest evilness, I now present the solution.
Open up Chrome's Settings
page, scroll down to the 'Search' section, and click on the button marked 'Manage search engines...'
Scroll down to the bottom of the "Other search engines" section, and you will see 3 sections, labeled "Add a new search engine", "Keyword", and "URL with %s in place of query".
Enter "Oolite BB" for "Add a new search engine"
Enter "oolite" for "Keyword"
%s" for "URL with %s in place of query"
Now hit the "Done" button, and you're done! (you need to enter all three parameters in the one hit.. if you move to another tab or otherwise leave the page, everything you've already entered will be gone, so copy the search string to your clipboard before
To use, just enter the keyword 'oolite' into the address bar and press space. The title will change to "Search Oolite BB", and you can just type in your search terms and hit the 'enter' key to get your results. Enjoy!