A bit odd, I've always found it a bit better than the banks...but then again I've also had issues with differences in the rates before/after logging in.
I've been getting them around the 2-3 week mark as well, sadly the offers aren't convenient for me but I still end up shopping at Woolworths. Mission succeeded...
I'm surprised you still have that option, I thought it would be something you could only do over the phone... but I guess some of the profiles have been kept from harm!
Admittedly, I have started posting to be able to put in a PM request :p but hopefully I'll be able to contribute in some sort of manner as well. As a non-frequent flyer, it's been very enjoyable to read the many good and bad experiences.