At one point, it was getting terrible with the amount of hackers at one point. I couldn't enjoy a decent Ground War match (even though I was hacking too =P). Later on in the day, it got better and I was able to go several rounds without a hacker (to my knowledge and what the kill cam showed).
But yeah, I'm sure they meant well for the free weekend idea, but it's simply giving the hackers a chance to go all out without any penalties to their real account by simply making another one.
Insomniac