This tidbit came from a blog I am quickly embracing as a technology favorite, Digital Inspiration. The following is a Google UK brochure on best website practices. The suggestions are geared towards an online retailer, but all can gain insight from suggestions and factoids, such as 23% of checkout dropout happens because of registration forms attached to the checkout process. This may be useful to a retailer checkout cart at first blush, yet it can also apply to other conversion events (download a white paper, download a music file, etc).
Take a look at the suggestion brochure here.
