"adhoc", I knew I should have looked up the spelling.

I thought I saw something about a Rabbit Hunt ... I think they would be perfect.
One module can connect to other modules, and it returns signal levels for each device it finds.
Zeroing in on something wouldn't be too hard at all.

They are not a Web Server. They don't serve up webpages. (Although your program can).
But you can connect to other things on the net.
Synchronizing time is automatic, so it's great for clocks.

I think the best part is that two modules can connect to each other without the need for a wireless router (adhoc).
I haven't seen a better way to connect two PICs wirelessly. 802.11/G, can't get much faster than that.
Of course you are limited to 1 megabaud from the USART, and it's not secure in adhoc mode.

The 16F628 will work fine with it.
A 12F1822 (8-PIN) will work just as well.

@ 4uA sleep current, it can keep your batteries in good shape.

Sorry for what sounds like a commercial, but I've been having fun with the RN-171.
And I guess Microchip knew a good thing when they saw it, and bought them. I didn't know that.