Originally Posted by
Cûr
Eh it takes quite a bit more than 1 hour to knock out 15 matches.
I played 11 matches back to back and it took about 2 hours. I'd say a quick match was 12-15 minutes, and a longer one could run 20-25.
Figure I'll be done tonight.
To clarify things a bit more...
Make sure you use a WoW character, not one from other games. Also, you don't have to accept any quest or such, just do the matches with a friend as a WoW character and you'll get automagically credited. Hover / click over one of the lower right hand icons and you'll see your progress.
Once you start HotS you can see chat from the main screen. Just right click on peoples names in the chat box and you'll get a pop up menu to "invite to party". When you get them on your main screen while waiting to fill the party you right click on their character and select "add friend". It might take 2-5 minutes depending on time of day to fill out your party, but just add them all as friends as continue on.
It's not as awful as I'd feared, as it was my first time playing any game of this type. I even spent a couple dollars to get Thrall because he looked fun.
Happy hunting.