I have six domains that redirect to my primary domain using an Apache
RedirectMatch permanent (.*) http://myprimarydomain.com
I understand that Google may penalize for flat-out aliasing sites; and
I can understand your reasoning and applaud it.
However, I have been unable to find a definative answer regarding 301.
I have visited many discussion sites like webmasterworld.com and all of
the responses contradict each other. As with many Google issues, I
doubt anyone knows the real answer. So, Does Google penalize for 301
I redirect these domains because they are either companies that I have
acquired or the name is a common misspelling of my primary domain. I am not trying to use deceptive SEO tactics.