New development today: Apparently mass mailings work - I finally got a great firm to bite and request a callback. OCI be damned.
As a side note, if you're from the south, get used to every firm with a regional headquarters up north or in california to yield protect the crap out of you. Vice versa, south eastern firms will yield protect for their home growns. You've got to offer something rare to transcend this barrier, especially in this economy.