A few points to keep in mind when posting reader comments:

• You need a blank line between paragraphs of text
• You can tag text as source code
• You need to add a space after any < character or it'll be taken as a tag. And if it's not one of the allowed tags (e.g. for bold, italic, code etc) the text will be stripped out.
• Be sure to look at the preview to be sure your message is displaying as expected.

I've also made some changes to the search page. You can now search for text containing colons, such as prop:sql. Prior to this change that search term would result in an error, and you had to use the term "prop sql" instead. That trick is no longer necessary.