Hey! Got some good news for you!
Recently I had to change domain name to one of my websites from http://keyword1-keyword2.com to http://keyword3-keyword2.com
And I was really worried about my Google ranking.. cause I was in the top 3 for both of my keywords... and now I had to change one of them in my domain name...
but....
I did a 301 redirect of the whole old domain to the new one (not redirecting page by page)...
and no rankings were lost AT ALL!!!!! Google is GREAT!  I love it!
So whenever you need to change your domain name, do a 301 redirect and don't be afraid to loose rankings
however there's another question... what will happen when my old domain will get expired and will no longer redirect all the link juice to the new one?
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