As mentioned, its Black Hat. Just like you can speed and not get caught 90% of the time, people do check and its possible that you'll get penalized greatly for it.
You are better off to do it the right way, by making relevant content and putting your keywords there rather than hiding a bunch of stuff somewhere. Besides, being found on a search is only useful if your site has something useful to the searcher.
Sure thats a lot of crazy keywords, but perhaps its better to hire someone who specializes in writing copy for SEO.
jeremy - gnomeontherun
Educated questions often get educated answers, and simple questions often get simple answers.