I opened both cards in November 2011, only used each card once, last month.  And btw - Sam's increased me to $10,000.  Turned around and asked for an additional $3400.  I just had a baby this past September so the Sam's Discover will definitely be put to good use now.  I try to avoid Walmart (because of the lines) as much as possible.  But DH can get some use out of the card now that it's at a pretty decent limit.