thanks for all the data points - decided to go for a 4th card after reading the success stories

8/2012 1st card
1/2013 2nd card
9/2013 cancelled 1st card
11/2013 3rd card
2/2014 cancelled 2nd card
4/2014 4th card

i have no other barclay cards and don't use the cards much (though i do go for the promos - spend $750/mo x 3 mo's, extra points on certain categories, etc).