I like this idea - have you considered writing the tool for bitstamp's API too? Their percentage of total bitcoin trading volume has risen a fair amount recently.
+1
I offer 0.2 btc bounty for this.
I know it's not much for the work but I hope others will add to it.
Bitstamp's API is pretty bad, and the security is even worse. You send your username and password in every request. No API keys and no grading of permissions. If you are somehow tricked into sending a request to the wrong server, you just gave away your account. MtGox's API is much better in all regards. A request sent to the wrong server contains no information of any use to anybody.
Bitcurex has an API very similar to MtGox v0, btw. Should be trivial to port.