also, another name

Nevis Services LTD
545 5th Ave # 402
10017-3646 - New York (New York)

Tel. 2125750818

Sales: 668,000
Number of employers: 4
President: Mario Novello

http://www.bizfind.us/35/751047/nevis-services-ltd/new-york.aspx

searching this name i found extensive info

http://www.domaindetectives.net/reports/unasi/tridenttrust.php

I highly doubt any of the offices will help find tom williams, I'm pretty sure that's the business they are in, but they may pass a message to him.

followed this not very much and found a number in the US of someone who may be able to contact mybitcoin (yes I still naively think he just took a month off)

Nevis Services Limited
545 Fifth Avenue, Suite 402
New York, New York 10017
212-575-0818 Tel
212-575-0812 Fax
nevisservices@nevisserv.com

from http://www.morningstarnev.com/nevis_services.htm