Socks are very breathable, so my feet don't get too hot.  Each pair that I've worn (each for about 10hrs in shoes) have developed holes at the toes.  I keep my toenails trimmed very short, so it's not that they were poking into the sock (ew!)  I've never had this problem with other pairs of socks.  Usually I can get a couple years out socks, but these won't last more than a couple wears each.
I'm sure these socks will be fine if you're looking for a casual pair to wear a couple hours at a time or to lounge around the house in.