At the moment I am rebuilding the website. And then the BTC-Trader for MtGox will be available again.
You are right. I should do a Bitstamp version of the product, since MtGox has lost many customers. But there is still another project to be finished. I am developing a windows version of Google Authenticator.
Easily speaking arbitrage through a transfer of USD funds between different Bitcoin exchanges is dead at the moment due to the regulations. Bitcoin arbitrage is really not that easy like in the gold old days. I really miss that!
I miss that too. The tool I told you by PM does not work between exchangers... It has an API created to trade on 4 platforms (MTGox, BTCe, Bitstamp and BTCChina! ).
We still need an application to do the job as you show it on the youtube video.
Also, a platform like Bitcoin.de should be taken into consideration but bad news is they don't have trades in USD only EUR...