Money Saving Idea: Writing to companies...

I used to write to companies a lot, either to complain about a product or to compliment a product. Back in the day I would use postcards. That seems so archaic, doesn't it, lol. Then of course, I progressed to email. In my experience, companies will often send coupons (even free coupons!) in response to your email. Somewhere along the line I stopped doing this... I guess I got involved in other things. But thanks to Money Saving Mom I'm going to start again. Last fall I went on a "free spree" with all of the free coupons I received just for sending an email. I'd like to do that again sometime soon. So my goal is to write to five companies a day. I will try to keep track here of who I write to.