BE CAREFUL !!! SOME BIG DANGERS LURK OUT THERE. You certainly can get miles/points transferring or writing checks on some cards, but if you are one (1) minute (or more) late in the credit card company CREDITING your account, get ready for an unbelievable series of mega-buck charges-n-fees.
Many tales of cc companies taking days and days crediting accounts after receiving checks etc. I would suggest any payments be electronic, by FedEx or equivalent. Earlier this year one cc company applied my payment to another account (someone crossed out my acct # and wrote in another acct # on the check). I knew I would EVENTUALLY get it worked out, but it took 5-6 months of calling, faxing, checking, re-checking etc to get all their stupid fees and charges removed for their ****ed mistake.
MisterNice