A rather nifty, speedy way of seeing if a page is getting the message across that you intend, is the "Adsense Preview Tool". Google's Adsense looks at the content of the page and displays adverts that are appropriate to the theme of the page.

It is intended for use by webpages which are thinking of adding Google Adsense ads to their site. It is an addition to the right click menu for IE 6x which shows you a preview of the ads that might show on your web page.

Installation instructions at:

https://www.google.com/adsense/support/bin/answer.py?answer=10005&topic=160

Here's an example of the ads that Google think are appropriate to Vertical Leap:

I guess in summary - its a quick way of seeing if you've got the emphasis right on your webpages.