Can Stack Exchange follow a more generic approach?
I am a programmer developing apps for iPhone, just want to ask a question on how to write a good press release for one of my iPhone applications. I started on stackoverflow, it was closed by some guys, one of the guys told me to go to ask on programmers.stackexchange.com, there I got a warm welcome by a downvote to my question as it's off topic, and directed again to answers.onstartups.com. I don't know if I have enough luck for my question to be answered on the new site.
My question is: WHY NOT CREATE A SITE FOR ASKING EVERYTHING ON EARTH??? I can even ask about developing my apps, or even how to cook a good meal, or even where to travel.
An example: I am going to travel to the U.S, just want to know some suggestions for buying an iPad in NYC. Where is the proper place for this? Do I have to search for all stackexchange sites for the right place to ask?