I made a post today about fuel and good prices, with a pdf file in link curious why was it was removed? any reason..the rules say nothing against it.
Assuming there was nothing obviously offensive about it (such as massively profane language or a direct insult directed at another member) the problem is probably some kind of bug. I suggest you post in the PriusChat Website Questions thread. Did you actually see the post posted? If not, a website issue may have prevented it from getting posted. The site was down for a while yesterday. That may have had something to do with it. The crash may have affected posts posted immediately before and not yet backed up, or if you didn't actually see it on the site, the crash may have happened just as you tried to post.
Wasn't me. Was it the start of a thread or a reply to an existing thread? Do you remember which thread? It might be possible that a file size limit was exceeded on the PDF and therefore the post didn't take. I've just checked the board logs and there's no record of one your posts being deleted. In fact, there's nothing about uploading a file with your name on it at all. I don't know. Glitch?