Last year I received two "Technical Support Incidents" in the iPhone developer program, but when I went to renew I found that I would lose them. I have another two for this year, but I'm not really sure about the kind of problems that can be solved by using them.
What kinds of questions are the best use of these Technical Support Incidents? What is the kind of problem I can use them for? What do you receive when you use them? Thanks.
Technical Support Incidents are for when you need code level support for a project you are working on. If your code is hanging up on certain pieces of hardware, or you need help diagnosing a bug in your system, then you can contact the Apple Engineers to help with the particular problem you are having and they will help to resolve the issue.
Notice this is different from a bug in Apple's systems, which is what the bug reporter is for. This is when you need help from Apple to track down a solution to a problem you are having in your code.
I have personally never used it, and with sites like SO, doubt I will unless I hit one of those one in a million edge cases where I code myself into a corner.
More information is on Apple's website.