I am in fact getting better SERP's on Yahoo, but only where their bot has visited all my pages for that particular phrase.
I like the longer snippets Yahoo uses. My "formula" of having a paragraph of descriptive sales text including the phrase twice works well with Yahoo. I have the same issue with MSN and other SE's.
Generally 1st where MSN has found the correct page. If you do all the
SEO techniques well, when a SE picks on one aspect to emphasise, and you have done all aspects well, you can only but win.
The semantics and longer urls that Google now searches means there is that much more competition for phrases. And the fact that Google is still playing tricks on webmasters... I would not like to go down the track of having pages for specific bots and disallowing other SE bots.
It will take a while for the Yahoo traffic to start coming. Hardly have any here in New Zealand.
Just done a tally up excluding bots - todays % same as for month within 2 percentage points - month over 6000 so far. No promotions to skew anything.
Direct 27%
Google 47%
Yahoo 7%
MSN 5%
other 14% (affiliates, other SE's)
---
100%
Only 0.4% for Alta Vista, and I am top for all my phrases on it!
Interesting.