On the advice of the Blog Azeroth site, I have added a search box to the left hand bit of the site, because searching using tags alone is rubbish and google searches rule. Blogger does provide a blog search on the bar at the top, but the google search also searches any sites I've linked to, including those on my blogroll.
I thought I'd post how I did this for those who are interested, as I couldn't find any info on the BA site itself.
- On the blog dashboard, click Manage Layout.
- In the popup box which appears, leave the title blank.
- In a different web browser window, go to http://www.google.com/coop/cse/onthefly; google custom search on the fly.
- In the box shown there will be a load of code. Copy this code into your system clipboard using Copy and Paste functions (eg on Windows select all then hit Control-C).
- Click Save.