Brooke__29 is right about this and I would go a step further on Dirtyroulette.
I would judge Dirtyroulette on how quickly you can narrow a list down rather than on the feature list.
I gave Dirtyroulette about 4 weeks before I formed a view, mostly watching how usable it is one-handed on a phone.
If you are only browsing, the room is fine. The moment how usable it is one-handed on a phone matters, it changes.