Disable IADs banners?

I dont think so. It's hypocritical of Apple to have iAds, they have previously said that it distracts from content. I think we can all expect loads of iAds in our apps now.

There is no reason for there to be more ads than there are now, but it will be easier to return to the app if you do click an ad. Most ads will be in free apps. People won't pay for apps with intrusive ads.

How do you expect developers to make money on free apps? If you don't like them, go buy an app without ads.

Is there a way to shut those banners off in the new IOS4?

What, and shut off that developers only way of making money from their free Apps?

Would you spend valuable time and effort developing Apps for your living and then be happy if you received no income from that?

Since you're not a developer and your income doesn't depend on it, there is no point worrying about how developers are compensated.

If you're so worried about developers making money only buy paid apps.

How does Apple know to whom that money goes?

Apple knows who each App is written by, and where each ad is located. Apple have already solved that issue - you don't need to worry about it, or know how it works.

Will there be hidden memory cost to keep track of what app I am using?

Doubtful. It's built-in to the OS, so the functionality is there whether its used or not.

Will there be extra network traffic to feedback to Apple that a banner ran 12 times innthe last 24 hours?

They need to collect the data somehow, but it will be miniscule. Lots of Apps already send out data for various reasons, and have been for a long time. You just don't know about it.

These are used as tools to use costed products

Sometimes, but not always. Many developers release free Apps for which there is no paid version. Some developers want to release ad-supported Apps instead of charging users for them. It's their choice.

there needs to be feedback from users who will see those ad banners.

You won't see the full Ad unless you choose to click on the banner. Don't you understand that?

If you don't want to go anywhere near ads, just buy Apps without them. It's highly unlikely developers will put ads in Apps you have paid for.

Many of the free apps do not have a paid version, so ads are the only way the developer can be compensated for his/her time.

I don't think i paid a lot of money to receive unwanted adds and like to know how to disable it its ridiculous that the use your phone to bother you with adds you didn't ask for.

Maybe my next choice will be something other than iphone.

Will there be extra network traffic to feedback to Apple that a banner ran 12
times in the last 24 hours?

They need to collect the data somehow, but it will be miniscule. Lots of Apps
already send out data for various reasons, and have been for a long time. You
just don't know about it.

I'm sorry, I just don't trust you on that. The fact that there is ANY extra bandwidth used for sucking down ads (many that include images, that are NOT trivial in size), is unacceptable and which probably constitute a breach of telecom laws (think about the Junk Fax law -- this is absolutely the same thing -- you have a finite resource (a certain number of bytes per month you paid for) that is being used for unwanted advertising (I, at least, don't want to see this crap)). Ads on the regular 'net are not like this because your home internet connection is not billed per [meg/gig]byte (don't bother arguing about the cap some ISPs impose -- that's NOT the same thing here).