Principal Component Analysis and Neural Network Based Face Recognition
Computer engineering thesis describing work on a real time face recognition system, with references.
http://people.cs.uchicago.edu/~qingj/ThesisHtml/

Mythic-beasts.com: X-Face
Includes a brief explanation of the X-Face format and an online Jpeg to X-Face converter along with its source code.
http://www.mythic-beasts.com/tools-toys/xface/

MessageFaces
Extension that adds X-Face and Face image compatibility to Mozilla Thunderbird. Also hosts a FAQ and a quick guide for Face image creation.
http://tecwizards.de/mozilla/messagefaces/

Face Expression Recognition Project at UPM
Computer Vision-based face expression recognition research project. We are doing robust face tracking, background maintenance, colour constancy based tracking, face expression recognition, or camera calibration.
http://www.dia.fi.upm.es/~lbaumela/FaceExpressionRecognition

Face Detection and Face Recognition
Betaface is a provider of facial recognition solutions for video and image content
http://www.betaface.com

The Face Header
A proposed improvement to the X-Face header. The Face header is a PNG image whereas X-Faces are one-bit images.
http://quimby.gnus.org/circus/face/

Face To Face Communications
Videoconferencing over low cost international ISDN, and multipoint bridging.
http://facetoface.biz/

NIST FERET
Standard face database for the evaluation of face recognition systems.
http://www.itl.nist.gov/iad/humanid/feret/

BIK Umfrageforschung
BIK Umfrageforschung
http://www.aris-umfrageforschung.de/

Opportunities in UK Facilities Management
The aim of The SMi Group is linking business with information through the delivery of high quality business information services. The SMi Group is a world leader in business to business information with products spanning over 250 countries - within the past year over 30,000 senior executives have benefited from The SMi Group's highly targeted conferences and publications.
http://www.smi-online.co.uk/reports/overview.asp?is=2&ref=896