I now have a spellchecker for comments. Based on the excellent GoogieSpell.
This will be a standard SnapOn delivered with Bloo alpha build 9 and later. Build 9 is coming out in a few days.
Also added recently is a Scripturizer, which converts all Bible references in posts into links to the ESV bible website. This was based on a handy javascript found here.
Here’s an example: John 3:16