Question 1: I see a lot of people getting great targeted offers for UA and hotel chains and Amex, etc.

How do they get these offers? Do I simply have to sign up for their email junk? Or do I have to be a cardholder? I understand that every company is different, but what is the general strategy I can use to receive more targetted offers?

Question 2: I have CCs from 6 airline companies right now. I recently applied for the Chase Sapphire and noticed that they have a clause in their agreement warning that I may be denied for the card if I am found to be a person who only signs up for cards for their bonuses and then never uses them. (I applied for Chase Freedom last year and I don't remember this clause. Is it new?) How can I avoid being flagged as a bonus abuser? Do I simply charge a cup of coffee or something else once every couple of months, just so the card isn't dormant?

Thanks!