I don't know if someone else has already thought of this or if it is common knowledge, but I wanted to share a tactic I use to increase keyword density on WordPress pages / post using spam comments. If you have a WordPress website and you've ever not used a captcha or another method of blocking spam comments, then you likely have gotten hundreds of useless, meaningless comments. Instead of deleting these, why not turn them into something useful? What I do: First, I login to WordPress and go to the comments section. Now pick a comment on a page or post that I want to increase the keyword density of. It's a good idea to pick a comment that is written decently and not just spam text. I then 'Edit' the comment and make it into something useful. Name: If this is some spam comments keyword I change it into something generic, sometimes I use keywords, but usually I don't. Ted, Jim, Jane, Jackie, John... just put a name in. E-mail: Leave this, or change it slightly, or delete it, doesn't really matter. URL: Just delete this. Comment body: Modify this to include keywords, keyword typos, whatever you want. Original Example: Hiya, I am really glad I've found this info. Nowadays bloggers publish just about gossips and web and this is really frustrating. A good web site with exciting content, that is what I need. Thank you for keeping this site, I will be visiting it. Do you do newsletters? Can't find it. After my edits: Hiya, I am really glad I've found this info about (keyword). Nowadays bloggers publish just about gossips and web and this is really frustrating. A good web site about (keyword) with exciting content, this is what I needed to find. Thank you for keeping this site, I will be visiting it. Do you do newsletters? Can't find it. Now just mark the comment as approved and publish it. If you're doing quite a few of these at once consider editing the 'Submitted on:' date to something in the past, or into the future. This can keep it from looking like 50 people commented on your post within a half hour. This allows you to increase keyword density without modifying the content of the post / article. Keeping you from having to 'force' keywords into the text rendering it, in some cases, unreadable. There has also been some talk about comments being noticed by Google and other search engines and used to bolster the usefulness rating of a page / post.. I don't know if this is true, but it makes sense to me.