Kind of, but for SSL certs and you have a bit more control and can choose the servers/notary's/people you are trusting. No rating system, it's either good, or its DENIED. It took FF over a month to block out the rouge DigiNotar certs (update 6.0.1). End user's tend to move a bit quicker than the software companies...
Make all your last demands for I will forsake you and I'll meet your eyes for the very first time, for the very last.
maynard <ibis>: they are awkward and last 2 damn long. I prefer thinner smaller ones