 Re:This does seem a bit restrictive. 

Might be over-reacting. I RTFA, and it's peppered with "mights" and "maybes". I'd wager that hitting the limit of 
emails in a certain time period is only going to make them put a magnifying glass on you for a while. They have access 
to enough information to ascertain whether you are sending legitimate emails or spam, that's for sure.

As a side benefit, this will help them help their customers that get hit with email worms... some people may not even 
know they are spamming, no?
