Wait for it...will buy in when I have some cheap bitcoins 

Ya, there are enough people who understand the value in bitcoins. Even if a lot of people are panic selling, there will be enough people buying to not drive the price down to single digit.

I'm a newb here so please don't flame me.
I'm not sure if there's a date of creation recorded for an address.
If so, we could check if the sender and receiver address is new (in the more recent blockchain)
Then there's no need to have all the previous blockchain

However, when we try to send to old address, we will face a problem...

It is suppose to let us familiarize ourself with the forum and the rules. However, some people just see it as a barrier and keep making unmeaningful/spam post to increase their post count. Good thing is the moderator actually pick them up fast.

Care to let us know how much do you charge per btc if we pay by paypal? Do you have your own rates or is it some reference rate +- %? Thanks.

It is actually a good idea to put the computer power into good use. I would like to see something like this implement in the near future.