1. Update the pages on your website frequently. Stagnant sites are dropped by some search engines. You can even put a date counter on the page to show when it was last updated.
2. Offer additional value on your website. For affiliates and partners you can place links to their sites and products and ask them to do the same for you. You can also advertise their books or videos, if these products relate to your industry and are not in competition with your own product.
It's interesting... I am finding my squidoo lenses are ranking even better than ever, but giving me less click throughs to my money page.
I think the guys at squidoo have too much crap on the lens giving the visitors too much choice with adsense, related lenses, etc (can't blame seth for that though, it's his site, he should be able to monetize it as he wishes).
My better results are coming trying to keep the lens as simple as possible with a...