Just an observation here. I participate or lurk on a number of different forums. This one I mostly lurk, with an occasional post. I'm not a professional in any of the applicable trades, but I do find many of the posts interesting, and I learn a great deal.
It's my experience that if someone in most any forum posts a question that no one can immediately answer, it will often go without any responses. Most people feel that not answering is preferable to several hundred useless "I don't know" responses, and I tend to agree. The trick is to not take it personally. I've found that people here are overwhelmingly helpful, and for the most part very courteous. Heck, they're even knowledgeable.
If a question that you've asked doesn't immediately get a response, it might be worth asking yourself if you could have asked the question better. Did you provide enough information? Did you make it clear what you specifically needed an answer to? If after a day or two you haven't had a response, delete the question, rewrite it, and post again. If you're in a really big hurry, most forums aren't the place to be looking.
Whatever you do, don't think that an unanswered question equates to going to a party and having everyone ignore you. In a forum it just doesn't work that way. Think of it more like placing a wanted ad in the newspaper. If no one has the qualifications or item that you're looking for, you won't get a bunch of people calling you up to tell you that they can't help you.
Have a good one.