Rich has a great article about Cirrus and COPA in Forbes.
annoying signup - can you cut n’ paste the article?
Because of copy rights, I can not cut and past.
It doesn’t take much time to sign up and you can opt out of all of the email stuff if you want.
Interestingly, I tried it through the Google link (searched on the article title) and it let me get right in w/o the annoying registration screen.