@ plague:
That's an excellent warning. I especially liked the part about FA. You can do more damage there than almost anywhere. And if you have the patience to follow it, it's probably the best advice.
However, I think it's hard to tell a new owner essentially "Wait 3 months before attempting to fix your team and get it going in the right direction." Making the game fun for new owners will improve retention and capitalize on the discounted 1st season, etc. Turning over the roster creates emotional investment in the team. I think a few simple rules for new guy trading are these:
1) Beware of vets who offer deals to you. Better to identify players you want and make offers.
2) Evaluate your own players well before trading.
3) Beware high OVR guys with poor stats. In general, be aware that stats for well established players tell as much or more of the story than OVR ratings.
4) Always be aware of the contracts you are getting/giving.
And for FA:
1) One year deals are a great idea.
2) Asking prices drop sharply late in the FA season and through Spring Training (not knowing this the first time through really messed up my strategy).
I think following these simple rules should help a new guy turn over his roster pretty quickly without killing his team, given an adequate understanding of baseball and of sim-type games. Again, if you have the patience, your way is best. But many don't.
And finally, I'm not sure why it's okay to single out an owner in the forums, but it's not okay to let a new owner KNOW that an owner has this reputation. Why is it okay for a new Foxx owner to find out about this guy by reading it in this thread, but not okay for him to find out by reading it in World Chat? Or a private Trade Chat? Make it un-fun for him to continue this behavior.