This is simply a test to see whether github's gist facility works acceptably as a way to quote source-code fragments in a post.
The following is a snippet of Groovy code which should appear as a gist:
This text should appear immediately below the code snippet. If this experiment works then I will very likely return to using Blogger - the alternatives are just too much fiddle (Posterous, Tumblr) or much more baroque and complex than I need (Wordpress.com). I want to get back to writing and micro-blogging properly: the first job is to pick the right platform and commit to it.