AirAsia sends out sale emails almost weekly and I have signed up for their loyalty program, as I fly with them couple of times per year. You can access AirAsia’s we page for this campaign here.
Now, they have a loyalty program seat sale starting at ZERO points for travel between January 1 and April 30, 2014. You can access this sale for being a member of their loyalty program starting on April 1, 2013.
The copy has asterix for terms and conditions but they are not linked anywhere. They may not require any base fare when you redeem, but they most definitely do charge for fuel surcharges, so these tickets are not “free” in any sense.
Also, whenever they have a sale, you have to book at least half a year in advance, as is the case again. These are valid for travel in the firs four months of 2014.
If you have some AirAsia loyalty points and can plan more than nine months in advance, these can be a good deal. Just check the destinations from the web page linked above.