Ok, I'm having kind of a brain fart moment here... I know how to obtain the lat/lng of a user via javascript, and have it working. I know how to search the database for entries within a certain radius ...

BOSTON--(BUSINESS WIRE)--dynaTrace software, the new leader in application performance management, announced today the release of its free AJAX Edition 3, now supporting both Firefox (versions 3.6 & 4 ...