If you are using Internet explorer 7 when playing Yahoo! Pool now you can somewhat get rid of the advertisements with an add-on called IE7 Pro. I wasn’t know this add-on so thanks to member “sob_lmao” to bring this on.
This add-on will remove the advertisements but will keep their places as blank . Firefox 2 users prepare for good news, at next post i will show you how to remove ads and no blank place 
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download Ie7pro (1.58 Mb) after download, install it.
The default setup will remove the ads but i recommend you to check out the preferences menu to see more cool options for better surf.
Edit: Be careful when using this extension cause it block some normal images with thinking they are advertisements!
What about me i don’t want to use Internet Explorer 7 
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As you wish you may read the posts below
Using Firefox ? No more advertisements at Yahoo pool in Firefox
Using Internet Explorer 6 ? minimize yahoo pool advertisements