dataclese:You know what's funny....there is no place to put one's OWN Lat and Long in the User Profile. Seems like it would be a natural to allow folks to store their own Lat/Log in their Profile and allow a search of fellow Waymarkers/Geocachers in one's area. Of course with the accuracy of GPS is it as good as giving away your address :).
~Dataclese~
Lep's suggestion for "Geocaching Guides" is a good one, although not everyone that Waymarks is a Geocacher. My "Waymarking Sticker Seekers" also works but does have a cost prohibitive nature to it (the shipping for a sticker can be $8... buy more stuff to make it worthwhile LOL). The Blog thing works too if you are able to make a Blog (I have no interest).
I too use an offset to the nearby coffee/doughnut store for the time I might actually meet a Waymarker. Unlikely I would ever post my house.
Even still, searching for any Waymarks normally should yeild a list of others that live in the general area and from there you can email them. That reminds me... haven't checked my Waymarking Inbox for a long time (oops)

BQ