An image is worth a thousand words. This image is a tag cloud generated by Wordle from the text at http://www.drkapoorsclinic.com . I don't need to tell you how such a map is helpful for SEO - do I?
And yes: despite my earlier post on Mac v/s Vista - that *is* a screenshot taken from my laptop running Vista. You might call me a hypocrite, I just call myself a pragmatist - if you can't beat 'em, join 'em. ;-)