First, on the subject of discount codes -- the issue that got someone in trouble with the EAN legal team was not specified but it was more than posting a single discount code. Part of it was compiling a list of codes.

I do not think that discussing a discount or posting a SINGLE CODE that is in the public domain could be construed as prohibited. If you use google, you'll find discounts for Car and Driver magazine subscribers here: http://www.best-car-rental-tips.com/...unt-codes.html