Have you ever gotten stuck figuring out what to do when making an ad or thinking about what to do next or better? This can improve these things (or practically anything for that matter).

ALWAYS put your work in context

Examples:
* If you’re writing a PPC (PayPerClick) ad, Google the keyphrases you want to advertise with and DON’T write ads like your competitors – be unique.
* If you’re looking to bone up your META on your site, Google the keyphrases you think best describe your business and then view the sourcecode on the top five sites for those phrases. (Look for the tags at the top that start with “meta”).