Its frustrating when people are just not willing to help when you cant find something that you are looking for, for days or weeks.
I disagree with this for a couple of reasons;
Firstly, some of the fun is in the research. Searching through forums/web pages/Google Maps and so forth can be really rewarding. Then when you find what you are looking for it's a great feeling.
Secondly, folk on here are very helpful if approached in the right way. When people just bluster in and ask things like 'where is this' it sends the wrong message. You will see the results are very different when a genuine question is posed via things like PMs.