So, how would my question here get deleted?!?

Thanks to iKelly and Emyli M for answering my last question. Your answers lead me to another question: How on earth would my question from last night get deleted?! It wasn't abusive (maybe a bit lengthy, but that shouldn't matter, surely?) Who can delete questions here (would it just be moderators, or can any Tom, and Harry delete other people's questions if they want to?!). Thanks in advance for any further light Y!A folks can shed on this mystery :)