The 10% referral bonus weight is still 10%, but instead of a session cookie that's good for one site and only until they close their browser, a referral of a new user to the ad network now is good for 14 days, for an infinite number of sites they signup. Just a FYI...
Sweet - I was about to look at the cookie because it had seemed to be an issue - you responded before I asked. It was a pain when adding my clients sites and only getting the 10% for the first one that I added.