Good suggestion. I added the link back in the GitHub wiki so folks can get some useful 'getting started' help. Hopefully at some point, someone working on Giraph (maybe me?) can distill the useful parts of the old mailing list and add them to the getting started guide. Here is the link for the old, deprecated mailing list in case anyone else is curious:
On Sep 5, 2011, at 12:36 PM, Dan Brickley wrote:
On Monday, 5 September 2011, Avery Ching <firstname.lastname@example.org> wrote:
> 1st message on the user mailing list.
Will you bring the old list archives across somehow? Today I found some useful 'getting started' tips there, but I notice the wiki link on github was removed just now.