I’ve been working on some reference information about ISPs for my own internal use as well as sharing with clients. There doesn’t seem to be any public reference site for postmaster sites, so I decided to publish what I’ve collected.
Outblaze’s conditions are that you are only sending confirmed opt-in email across all of your IP space. They only provide FBL emails to senders on their whitelist.
RoadRunner is currently publishing “early 2009” for when their FBL will go live. Senders who have a current FBL will need to reapply when the new FBL goes live.