With the old one you could send a link with your name and member ID prepopulated.
The only real downside to the acclaim solution is that you need to set it up (although that gives you control over what is displayed) and that it has the word "badge" on it, which causes discontent for a few members of our community.
Even though I use links to my Acclaim badges on my LinkedIn profile (I've made this comment before - see link below) there is something to be said about validating someone's certs directly with the cert vendor as opposed to through a third party. So being able to do that easily through a single URL which prepopulates the required fields just makes everyone's lives easier.
Yes, I just tested it too. I must say I was a bit surprised that it went smoothly --- the way things are going with the rest of the site, I was expecting an error or at least some lag when I clicked on 'Search.'