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You would never be penalized for having to many links on a page unless it is being done for a spammy/deceptive reason (and after reviewing your page - you are obviously not). The reason SEOMoz marks it as a "warning" is because it is something worth knowing for two major reasons: Most search engines can only crawl the first 100 links on a website. So it is important to place the most important links higher up on a page. With more internal/external links on your page you disperse the link value far more quickly. So once again, it is nothing to worry about but something to be aware of. Keep focusing on the great content you are publishing and less on the minutia of technical SEO Good luck! - Kyle

I meant that I added canonical tags to my site after I noticed almost the exact same thing that you did so I was suggesting that you do the same.  Sorry for the confusion.  And yes, I was suggesting that perhaps SEOMOZ changed something with their crawl since we both noticed the same thing around the same time.

Thanks again Zach! Are you saying that in my htaccess I should be forwarding addon.maindomain.com and maindomain.com/addon to addon.com? OR is it more complicated/involved than that. I'll def get a developer to do this for me, but I just want to make sure I know what I'm telling them to do and why.