Very smart, I like it. Gravatar is obviously wrong in its defense of the md5 choice. The md5 of an email is way more significant as we know in advance the stru

Very smart, I like it. Gravatar is obviously wrong in its defense of the md5 choice. The md5 of an email is way more significant as we know in advance the structure, and for 80% of the population, we have a strong guess of the domain, the format. Rainbow tables can be specialized for one domain (*@gmail.com) via the reduce phases or for the "first_name dot last_name" structure... & so on.