There are no dumb questions if you've done your best to help yourself at the same time. To be fair, and I'm confident that this is true of almost every skill level, everybody asks a question once in awhile that they find the answer to in some silly simple place moments later.

The most annoying question is, "I'm writing an application to <blank>, and I need to know how to <blank,repeated>." I'm writing an application to upload files, how do I upload files? I'm writing an application to write to a database, how do I write to a database? We don't know if you've tried, what you've tried, or if you're just blissfully unaware that there's a very good manual sitting right on PHPs web site. So instead of being able to help, we have to ask questions that should have been answered already, "What have you tried? What does your script look like? Are you getting an error, or are you just not sure where to start looking?". It becomes so redundant, I just don't bother asking anymore.

That aside, I think most of the people here will stick around. It's got a loyal, small, but loyal following. Sadly though if you need a question answered fast, you're better off on phpfreaks.com, as those forums are going almost non-stop.