What an original answer Guinanie! I'm sure Brock knows these things, if not, then he hasn't done his homework, and Brock if you haven't done your homework, then see me after class... here is a quote to an article about Alexa:
As we have seen, there are pros and cons to Alexa ranking. The bottom line is that most people consider it valuable only for direct advertising. Given the fact that Alexa ranking for a site is calculated on the basis of how many visitors with the Alexa toolbar installed have visited that particular site, the results can be inaccurate.
Nevertheless, it may prove useful for sites with very good traffic that attract highly targeted leads, since Alexa focuses more on the traffic that Web sites receive rather than on links to it. As a Web site monetization strategy, we can safely say that Alexa ranking might be the right solution
Bottom line is, what are you getting out of your Alexa ranking? If the traffic gives you money, then don't worry about the redirect, just link to the old blog; but what you might want to do is run the blogs in tandem. Of course this all depends on what you are ultimately getting from Alexa besides Traffic.
Here is the full link btw,
http://www.sitepronews.com/archives/2007/sep/26.html