Well, indexing is something slightly different from being first on the SERPs, which is as well different from visits brought to your web-site.
So the good thing is, yahoo! and msn should index our web site better, but we still have to wait and see a bit how it goes.
I am not sure Yahoo! will spider new web site faster thanks to the sitemap system. I mean, unless they plan to lower their directory submission fee
MSN should, if it makes it, index a lot more pages. I say if, with little sarcasm thinking about the high page loading time they usually have on SERPs, and at the 21th page's bug.
Actually, I am not sure sitemap sharing will jeopardize Google #1 position after this if you know what I mean, but let's hope the other two will do a better job thanks to once again Google
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