I just closed my biz card I got a month ago and also asked and GOT my annual fee refunded. Not sure if people do this on a regular basis, but wanted to mention that it was very easy to ask the CSR for the refund of the annual fee. I didn't lower my CL before I closed my card because I didn't know that I should do this with business cards as well. Didn't think I'd apply for one of these soon, but reading replies above makes me think that I should as it seems to work.