It seems like many users of the Linux, *BSD, and FOSS communities in general have something of a beef with Oracle. I've seen people say off-the-cuff things like, "too bad Oracle hates their customers" and the somewhat surprising "I'd rather sell everything I have and give the money directly to Microsoft than be forced to use any product from Oracle" (damn!).
…What did Oracle do, exactly? Can someone fill me in? All I know about them is that they bought out Sun and make their own CentOS-equivalent Linux distribution (which apparently works quite well, but which some Linux users seem wary of despite being free and open source).
For the record, I'm not zealously pro-Oracle or anything, but I don't know enough about anything they've done wrong to be anti-Oracle, either. What's the deal?