Please take a look at the following screenshot and tell me how this thing helps in SEO?

[snip]

I am sure you must have seen this in some websites and I am noticing increase of this technique. It's about putting tags and keywords on page with different font sizes and/or color. Is there a particular name for it and how is this effective in SEO?

Thanks

[edited by: pageoneresults at 8:23 am (utc) on April 24, 2008]
[edit reason] Removed Screenshot - Please Refer to TOS [/edit]