Maggiano's -- if you sign up for their e-mail club, you get $10 off your next visit (dine-in only, not takeout).
They also have a deal if you order one of their classic pasta dishes, they'll give you a second classic pasta dish to take home for free (no coupon necessary).
Maggianos sends them out via snail mail and e-mail...if you make a reservation online at Maggianos or join their club they'll send you coupons via e-mail (say your birthday is within the next week when creating a profile and they might send a $10 off $30 or similar......). I currently have a $10/$30 for my wife's birthday, but she's going to make me take her there.
Maggiano's is a Lettuce Entertain You restaurant. I sometimes get mailers with coupons full of LEY restaurant coupons. I don't have any right now to send you, but you could try to contact LEY and get on their mailing list.
I've never seen any Cheesecake Factory coupons but every once in a while, they do a promo where you can donate 5.00 and get a free slice of cheesecake with donation. It doesn't seem like much but considering most of their slices cost 6.99 or 7.99, you are still a little ahead. And ****, but their banana cream cheesecake is the best LOL.
Maggiano's ... everyone here pretty much covered it. The LEYE coupon books are sent out a few times a year and they send a 10.00 or 20.00 birthday card to me and DH every year but the only thing you could do is sign up on their list and hope they might send something out soon.
The only other suggestion I have is to check some of the gift card sites like Giftcardrescue.com or PlasticJungle.com. I have bought from both and they are legit. Giftcardrescue has LEYE GCs for 10 percent off right now so if you pick up a couple of those, it's the same as getting 10 percent off your Maggiano's bill. It's not much but some savings is better than no savings IMO. I don't see any Cheesecake for sale right now though.