This extension allows you to select a block of text (or an entire file) and format it suitably for a blog post (currently only supporting Syntax Highlighter tags).
To use it, just find some code you would like to blog about, right-click and choose "Format for your blog".
A quick overview of the features in this version:
Formats your selection, removing leading tabs and replacing them with double spaces.
Removes consecutive blank lines
Optionally applies Html encoding
'Copy' button for quick copy to clipboard
Constructs <pre> tags for Syntax Highlighter, using new or old style format