I know. I've asked for further clarification, especially since their email on Friday said API keys should be reset "if applicable."

Edit: Groan, here's their clarification. It's starting to look like they don't know what the heck they're talking about:

"Thanks for getting back to us. To be extra cautious it would not hurt to regenerate your Linode API key. You can do that in your user profile. Please let us know if you have any other concerns we can address."