Few of my friends and their personal sites:
 

Michaël Vergoz: Programmer who has good knowledge in Language evolution (compiler compiled), Neural Networks and low level programming. He is developping an Artificial   Intelligent engine for the company BinarySEC, he is co-founder - Website : http://www.webfault.org - http://www.binarysec.com

Udhay Kumar: Striking the perfect perceptive balance between all of "U" and "I" (UI) Usability, Information and Interactive Design Guru http://www.uxfirst.com

Chandrashekar Babu: A Free Software/Open Source solutions technologist with knowledge in wide range of FLOSS tools and applications http://www.chandrashekar.info

Eric Landuyt: System Programmer who has good knowledge in Disassembling, Reverse Engineering and working for IDA Disassembler, For more info check his website  http://membres.lycos.fr/rix

Piotr Bania: System Programmer who has Good knowledge in Anti-virus, Disassembling, Reverse Engineering and Cyber Security. For more info check his website  http://www.piotrbania.com/corp_main.html

Trent Waddington: System Programmer who has Good knowledge in Decompilation / Reverse Engineering, For more info check his website http://boomerang.sourceforge.net