If the adds expire, they will still be on the blockchain right?

Life is a risk, cripto is a gamble... Every one can and must make his  own decisions !

Than I suggest you to wait until the end of this ICO and then decide whether you want to buy at the set price.

In theory yes. Basically what I suggested at the live interview is to allow users to enable option "let the ad expire in X month". If enabled, anyone who will install wallet after X month will not download expired Ads along with the blockchain. Those who have an old blockchain will still be able to see old ads. I'm not sure yet if this is entirely possible but that's the plan. Also I'm more worried about size of the  blockchain rather then inability to delete ads.

i don;t understand..all investor will buy with the same price or it 's depend on the time they are order

All investors put the money in the jar. After the ICO ends total amount in the jar will determine the price. Everyone receive the amount of coins as if they were buying for that price. You don't know the price now. Every time someone puts something in the jar it gets higher. The price in the OP only shows what would be the price if ICO ended right this second.

where can I find the confrimation of POD of this coin?
thanks.

You can watch the live interview here http://youtu.be/GndWUKio6l8

what coin are you talking about?

https://twitter.com/cryptsy/status/512962095013314560  he he