This information is very specifically explained in the threads dedicated to each of those cards. The only question is whether someone wants to collate and maintain it.
You do have a valid point, that the information is out there, but it has to be searched for. My thought is that if it is laid out in one place and is easy to find. Then it is also easier for the CC companies to gauge the interest (based on the the thread popularity and activity) and scope of the issue and may lead to them changing things to be even less favorable for this type of thing. I can see the argument either way though.