Bit of a tangent. I'm irked by comments such as this, that are mildly related but add not much value to the discussion besides a shameless plug for their own products.
I agree. It's felt like a lot of online forums are starting to become Quora where it's all self-promotion thinly veiled as adding to the conversation. It reminds me of PG's The Submarine blog post (http://www.paulgraham.com/submarine.html)
I feel you. But it's not a product. Not anything I'm doing anything with. Just thought it might be an interesting thing for the OP to integrate into his app.
Fwiw