Finally - cheap WiFi?

@Gordon

Personally I've always wanted to make a PCB with a whole bunch of
snap-out adaptors for various modules...

That's a great idea. I personally find that they key part in that is the "universal connector/port" design if you want to attach multiple modules. Probably would be good to stick with one that is already out there ....

• JeeLabs has the JeePort (http://jeelabs.org/2011/11/10/pins-damned-pins-and-jeenodes/)
  
• .Net has the Gadgeteer socket (http://gadgeteer.codeplex.com/wikipage?title=.NET%20Gadgeteer%20Socket%20Types)
  
• the Netduino folks are working on a "GoBus" which uses the same Gadgeteer connector (http://komodex.com/blog/2012/07/a-developers-introduction-to-gobus/)
  
• Olimex has the UEXT connector (http://en.wikipedia.org/wiki/UEXT)
  
• MikroElektronika has the "MicroBus" (http://www.mikroe.com/mikrobus/)
  Then of course you have the Arduino Shield layout, XBee footprint and probably a few others.
  
  

The "MicroBus" seems pretty versatile, but the footprint is kind of big and doesn't use a regular connector.
UEXT seems versatile too, but might be lacking dedicated GPIO/Analog/INT/PWM pins.
Gadgeteer defines different "Port Types" for the 10-pin connector to get around the limited number of pins.
So there isn't really one out there that can do it all, Gadgeteer comes pretty close I think, but the connector and the cables are just a pain to work with (not 0.1" compatible) ...