Chase is handing out a lot of offers

I've been getting a ton of offers from Chase lately (I know that it's the holiday season, but the number of offers I'm receiving is just ridiculous). I'm curious as to whether this is their business strategy or if they just don't have the proper measures in place to ensure that a single person doesn't get a ton of offers. Are they trying to get me to sign up for as many accounts as possible? Or are they not aware that they sent me 3 offers for the Amazon business card?

In the past 3 months, I've gotten 3 0% APR offers, which I've taken advantage of and 3 airlines miles offers (2 for United and 1 for Continental).

I've already gotten 21,000 free miles from another United offer this year as well as miles from an American Airlines card, which as I recall correctly was also issued by Chase.

Some credit card companies look at the rate of turnover of your accounts and how many accounts you've opened in your recent history, but I'm guessing that those aren't important factors for them.

Update: I applied for my third Amazon Business Card and was turned down due to having too many accounts already open even though they sent me a direct mail offer.