Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Look at OpenOffice.org draw features before buying

I've been fiddling with the OpenOffice.org and StarOffice features for a while, then took a look at the Draw program. I was blown away. It's like a mini Visio Elements -- it's got the connector lines you need and really good control over positioning, plus it's got a gallery where you can store prefab shapes.Seriously, download OpenOffice.org if you're not a huge Visio power user. You'll be really surprised and impressed, and of course OpenOffice.org is free, so that helps.