First of all:
Thanks for IMP and LPG - these are really great projects. I can't wait for
IMP to leave incubation phase.
I just started a tentative LPG help page to document some of my findings
while experimenting with LPG. At the moment it only includes a list of the
LPG options with some comments. I hope someone will find it useful: http://wiki.eclipse.org/IMP_LPG_Help