Adult dating, real estate, gambling, etc etc ...
Really there is nothing new to the table, so what is it about ?
How much you spend on marketing ?
That's pretty much my thought. I see new alt-coins popping out every day... as you said, for gambling, for music,etc.. they've became like facebook credits, you buy them and use them on one specific website just for that company that created it so they can roll those coins on their own website while the price is rising... similar strategy to steam, where you can deposit money and sell games but you can't withdraw.