Linden Lab sites are that. They are not a part of BrainTalk Communities. SecondLife is a part of Linden Lab, however.

This is the domain for Linden Lab, which is, in fact, the brainchild of Philip Rosedale, not JL:

http://lindenlab.com/

Linden Lab has its own employees; the security problem that had affected SecondLife was addressed by Linden Lab/SecondLife, and the hole was sealed - as I posted previously (in a different thread). JL just happens to be employed by Linden Lab. Philip R. and JL are also two completely unique people, as well. Wanna see :

http://www.sfgate.com/cgi-bin/object...DVKFD1.DTL&o=2