I am looking into signing up with www.optimizely.com for conversion testing.  They put scripting on my site which will then redirect half of my site visitors to an alternate home page.  The site I want to test on is ranking quite well with Google and I do not want to hurt my rankings.

And with this set up,what Google will think is my home page is not and so I am essentially sending visitors to a different page than Google reads as my home page in source code.

So, my concern is whether this will have a negative impact on my SEO rankings to redirect 50% of site visitors to a different page using this testing tool?

I would use Google Web Site Optimizer, but many of my sites are in Wordpress and it seems that Wordpress and web site optimizer are not so compatible.

Advice would be appreciated.

Thank you,

Robert