I do get a sense that they put more effort into marketing and growth than actually fostering a solid knowledge base. However, an interesting point was raised i

I do get a sense that they put more effort into marketing and growth than actually fostering a solid knowledge base. However, an interesting point was raised in another comment: comparable sites that focus on quality often come across as unwelcoming because they have strict guidelines. I'm not sure it can be entirely blamed on the fact that they're VC-funded--to some extent, it seems they're more interested in being newbie-friendly than producing quality content.