What an idiotic idea: the best way to make a product more useful is to ask people who don't care for the product to use it, why they don't care for the product!
How about you ask people who use the product, what they find as troublesome and what more they want from it?
because they are already here and something convinced them to stay here and they say it on different occasions. In turn, what blurt needs in my opinion is more users that can be acquired, min by finding out what discourages them from joining.
Then what are you doing asking on blurt what non blurt people want to see out of blurt? Whichever way you look at it it doesn't make sense.