It was recently announced that WoW would be receiving achievement points, well looks like it's not the only one. Along with it, Starcraft II and Diablo III will be joining the list.
All of which will be directly linked to your Blizzard account and viewable through it. Jeff Kaplan stated that they are making an attempt at a similar feel as found on Xbox Live.
The points will also render a level you're at called a “Blizzard Level”. Which means that you'll be able to show off the fact that you have a love for all three of the Blizzard games and prove once and for all that you do indeed pwn at all three.