From Yahoo Search

[slotplayer]

Yahoo! organic search transition to begin
Later this week, we will begin the work of transitioning the back-end technology for Yahoo! Search over to the Bing platform. This is an important step toward our goal of improving the overall relevance of Yahoo! organic search results and attracting a larger audience to Yahoo!

Search, to ultimately put your ads in front of more potential customers. You'll want to make sure that you're prepared for this change, so be sure to check out these tips and stay tuned to the Yahoo! Search blog for confirmation of when the organic search transition is complete.

[Chips]

This is going to be "Interesting" Over the past few months my Yahoo traffic has really picked up and on a newer site of mine, surpasses Google traffic. (Good or bad I don't know).

[Chips]

And as far as paid advertising/paid search for the gambling market:

From the Yahoo! Transition Center - advertising page

Disallowed content categories and new restrictions
Once the new guidelines go into effect, any keywords and ads related to the following types of content will no longer be allowed:

• Online sales of hard liquor
• Militia ordnance
• Dating sites marketed as ‘affair’ or ‘cheat on your spouse’
• “Educational” or “learn to play” gambling sites

But what is "Educational or Learn to Play" exactly? Does this mean that an operator could do an ad campaign but affiliates can not as we "educate" the visitors?

[Murton]

Google all the way is all I can say... SEO for Yahoo and Bing is TOTALLY different to Google.

[catchingsmoke]

hmm... this seems to have been a very long time coming, thery've been saying that they're going to this with wicrosoft for donkeys.

[dhayman]

This is going to be "Interesting" Over the past few months my Yahoo traffic has really picked up and on a newer site of mine, surpasses Google traffic. (Good or bad I don't know).

Enjoy the traffic while it lasts. I have had similar results to you. My Bing ranking is significantly "worse" than my Yahoo ranking, so I am holding my breath on this implementation. Unfortunately, Microsoft has the purse strings here......personally, I think Yahoo has the most reliable and predictable Search Engine results in the industry. It looks like that is about to change, possibly for the worst.