I'm new on SU but have been on SO for a while. Asked my first question (admittedly a broad one) which I assume got deleted by a mod. This in itself doesn't bother me in the slightest.
The fact that no feedback is given as to why a question is deleted could be very disconcerting for new users. And it'll probably take a while for them to get to the 10k posts mark to be able to view their deleted posts.
Could we get some sort of information when a question is deleted. Simply "Your message was deleted/merged because of X. Read the FAQ" would be far better than nothing at all.