Lpc2000

>> What current is running through the switches on the Olimex
>> design? Depending on the current it may be there to help maintain
> oxidation.
>
> They have Vcc -> 33kohm -> WP1 ... WP2 -> 2kohm -> GND
>
> So since the internal circutry has no idea about this, if I don't
> care about the write protect, then I can just leave WP1 and WP2 not
> connected, so why would they do that?  Unless they were planning at
> some point in time to also connect WP1 to a GPIO on the micro?

They tie WP and CP to inputs on this design:
http://www.olimex.com/dev/images/sam7-p64-sch.gif

I imagine the resistors are populated as a feature, so if you want either or 
both signals simply add a jumper to the desired input pins.  If you are 
using a socket with higher quality metal, and depending on the end product 
environment, contact oxidation may never be a concern.  The finger contacts 
that connect to the actual SD card are self cleaning.

Joel