Planet13 - 3:05 am on Apr 24, 2011 (gmt 0)
I've read that Google might give less trust to a site that has an excessive number of redirects.
That isn't particularly good news for me... I already used 301 redirects to move half the content to a different site.
But whatever you do, it might be best to do it gradually if you can.
thanks for the advice. Unfortunately, I don't know if I am going to be able to do that, either. It turns out ALL the long URLs have the same directory (which is currently blocked with robots.txt), so unfortunately it is an all or nothing operation.