If an answer uses a link with the default format (using `[link text][1]`) and later `[1]: http://somelink.com/` then when a moderator does convert-to-comment it doesn't become a link. It should convert to `[link text](http://somelink.com/)` without the moderator having to go edit the comment. Here is the answer text to [this question](http://money.stackexchange.com/questions/8215/why-do-non-electronic-stock-exchanges-still-exist) that was converted to a comment: Hopefully someone else (who knows more about it than I do) will post an answer that describes how trading actually works these days and why the physical stock exchange is necessary. However, the 2010 "[flash crash][1]" is a good reminder of what happens when we let computers take over. [1]: http://en.wikipedia.org/wiki/2010_Flash_Crash