Yahoo indexing and pop-unders

Do they affect the spidering

[Sense_able]

I have been advised that having popunders on my site will affect my listings with yahoo.

I do have many hundreds of pages listed with yahoo but many of them are way, way out of date. Is there any truth to the idea that slurp will ignore pages with popunders....

I always thought that spiders could not read JavaScript. I am serving fastclick popunders

[sabai]

It's complete BS - popunders have no effect on your position in yahoo's results at all.

[Sense_able]

That is what I thought...

Slurp would have to read java to determine pops