Sun acquired MySql now Oracle are trying to acquire Sun, this could be bad for companies that use MySql. It seems likely Oracle will kill off MySQL by starving it of resource in order to protect it's current database products.
So if you are using Microsoft Sql Server and have a big smug smile on your face I would urge you to think about what Microsoft's reaction to the death of MySql will be. Ask yourself would they be offering all the free / low cost versions of Sql Server if MySql had not been around as a viable alternative?
It looks like the only hope is the EC who are worried about the effect Oracle buying Sun will have on competitivness in the market place, if this effects you read the blog post linked to at the top of this post it advises you what you can do about this.