I actually like that Elliquiy doesn't force me to link anything across my social media / online applications and accounts. Obviously, you only release as much information as you want on Gravatar's site, so it's not really the sharing of information that's the big deal, but I keep my Elliquiy profile/persona completely separate from the rest of my online accounts. Even had we the option of using a gravatar, I would prefer to upload my own image rather than use the gravatar I use for my personal blogs.
Plus, I like the dimensions of our avatars. :)