Search engines, keywords and meta-tags

I've added some code that allows posters of content to (optionally) add a Description and keywords to their content. These are 'hidden' pieces of content which are used by search engines such as Google to list and rank pages. If you don't enter anything, the code will automatically generate based upon the first couple of lines of your posting. You will see a new area when creating content called 'Meta Tags', this is where you add the description and keywords. (The box for 'Description' automatically offers 'rich text', don't bother with this, it's not necessary but I can't work out how to remove it!).