I recently discovered the Squidoo Lens Health Check, thanks to a suggestion from the Sqidu forums. If you use squidoo or are planning to use squidoo as a way of promoting your site, this tool may be helpful. It's quick and easy, and automatically runs through a checklist of the various points in ensuring your lens ranks well. Although expert squidoo users will already have a good grip on these issues, it can be a good guide even for more experienced lensmasters to help prioritize your efforts: focus on the weakest aspects of your lens first, before moving on. When I ran this tool on all my lenses, and made the appropriate changes, I noticed an immediate and dramatic increase in google traffic--within about 4 hours. I'd really recommend it.