I have compiled a list of LLM groups on lawyrs.net including signup links for those who haven't joined the lawyrs network yet. I have also listed some non-LLM groups, which I thought could be useful for other LLM-Guide users. If you find other interesting groups, please post them below!
XML

LLM Groups:

LLM-Guide Group (66 members)
www.lawyrs.net/groups/6/llm-guide
Signup link: www.lawyrs.net/llmguide/6

Leiden LLM 2009 (29 members)
www.lawyrs.net/groups/36/leiden-llm-20082009
Signup link: www.lawyrs.net/llmguide/36

Amsterdam LLM 2009 (14 members)
www.lawyrs.net/groups/41/university-of-amsterdam-l…
Signup link: www.lawyrs.net/llmguide/41

ILF LLM 2009 (16 members)
www.lawyrs.net/groups/37/ilf-llm-20082009
Signup link: www.lawyrs.net/llm-guide/37

EMLE Group (16 members)
www.lawyrs.net/groups/64/e.m.l.e.
Signup link: www.lawyrs.net/llm-guide/64

Maastricht LLM 2009 (1 member)
www.lawyrs.net/groups/73/maastricht-university-llm…
Signup link: www.lawyrs.net/llmguide/73

Other groups:

Law Firm Networking
www.lawyrs.net/groups/66/law-firm-networking
Signup link: www.lawyrs.net/llmguide/66

In-House Lawyers
www.lawyrs.net/groups/54/in-house
Signup link: www.lawyrs.net/llmguide/54

Tax Consultants
www.lawyrs.net/groups/19/tax-consultants
Signup link: www.lawyrs.net/llmguide/19

Criminal Lawyers
www.lawyrs.net/groups/15/criminal-lawyers
Signup link: www.lawyrs.net/llmguide/15

Intellectual Property Law Group
www.lawyrs.net/groups/21/intellectual-property
Signup link: www.lawyrs.net/llmguide/21

Human Rights
www.lawyrs.net/groups/14/human-rights
Signup link: www.lawyrs.net/llmguide/14

WTO Law
www.lawyrs.net/groups/49/wto-law
Signup link: www.lawyrs.net/llmguide/49

WTO and Environment
www.lawyrs.net/groups/50/wto-and-environment
Signup link: www.lawyrs.net/llmguide/50

Lawyers’community in China
www.lawyrs.net/groups/51/lawyers-community-in-chin………
Signup link: www.lawyrs.net/llmguide/51

American Lawyers
www.lawyrs.net/groups/17/american-lawyers
Signup link: www.lawyrs.net/llmguide/17

French Lawyers
www.lawyrs.net/groups/22/french-lawyers
Signup link: www.lawyrs.net/llmguide/22

Italian Lawyers
www.lawyrs.net/groups/8/italian-lawyers
Signup link: www.lawyrs.net/llmguide/8

English Lawyers
www.lawyrs.net/groups/16/english-lawyers
Signup link: www.lawyrs.net/llmguide/16

Pakistani Lawyers
www.lawyrs.net/groups/45/pakistani-lawyers
Signup link: www.lawyrs.net/llmguide/45

Africa Business Law
www.lawyrs.net/groups/18/africa-business-law
Signup link: www.lawyrs.net/llmguide/18

Brazil
www.lawyrs.net/groups/65/brazil
Signup link: www.lawyrs.net/llmguide/65

Abogados Mexicanos
www.lawyrs.net/groups/46/abogados-mexicanos
Signup link: www.lawyrs.net/llmguide/46

Oxford Alumni
www.lawyrs.net/groups/23/oxford-alumni
Signup link: www.lawyrs.net/llmguide/23

Delhi University
www.lawyrs.net/groups/72/
Signup link: www.lawyrs.net/llmguide/72

I can’t believe it’s a law firm – Fans of Lionel Hutz
www.lawyrs.net/groups/48/i-cant-believe-its-a-law-………
Signup link: www.lawyrs.net/llmguide/48

I created a new one, for people attending a LLM in Universiteit Utrecht (The Netherlands) next academic year!
:)

Utrecht LLM 2008/2009

Hello, there is a group for Indian lawyers: http://www.lawyrs.net/llmguide/76

RE: LAWYERS.NET℠

Gary Fusfield has been a Texas lawyer for nearly three decades. Gary Fusfield is the Founder and President of the Internet Bar Association℠. Gary Fusfield is the original registrant and owner of the following domain names:

LAWYER.NET℠
LAWYERS.NET℠
LAWYER.ORG℠
LAWYERS.ORG ℠

The Internet Bar Association℠, @LAWYERS℠, the above domain names, and their respective logos are all service marks of Gary Fusfield of Texas.