Lat night, I logged into Points.com just as a quickie way to check my balances and noticed the trade/exchange options were greyed out for both UA & US. These options are still available for AA so I would encourage anyone who has orphaned points (Best Buy, Frontier or ??) in programs they don't use to swap them to AA. No one knows how long they will be an option.

There is a screenshot of what I am talking about on my blog.