Domain Forwarding...good/bad for SEs?

[LD]

Another question about Se's...if you set up a mirror site and forward to the main site, does this offer any benefit, or do forwarded domains just get passed over?

[Halfdeck]

If there are links pointing at a mirror site A and you install redirects on that site to site B, link juice will transfer over to site B.

If nothing is linking to site A, redirects will have no effect.