Kindle NowNow

So I got myself a Kindle (given that I only read books once, the negatives don't really bother me, and the browser lets you read blogs without paying). One of the first things I did was ask the built in 'NowNow' service about whether the Kindle would support PDF, and got back the following highly-bitchy answer:

"Not directly, you need to convert the files

Unfortunately, none of us answering your questions has ever seen or used a Kindle. We're not Kindle customer service representatives and we don't have any special information about how to use one or any of its features. NowNow never even bothered to tell us that we'd be answering questions from Kindle users. So unfortunately, I don't think you're going to find much help here with your problem. Your best bet is to try to contact Amazon's customer service (which is not us) and maybe someone there will know more about it:

[...]

Sorry I can't help. I checked through the user guide and I saw nothing about disabling the buttons. I tried, but I'm sorry they haven't given us a way to answer this type of question.

Good luck!!"

(This is not to pick on NowNow - the rest of the answers provided were great, and pointed me in the direction of a PDF to .mobi converter).