Size might be OK - but quality of content is King. Google wants to see popularity of content, and not artificially driven. It wants real good content, linked to by real good authorities. Reputation rocks.
You might be talking about bing but not google, sincs panda/penguin in april i wouldn´t trust only one information site that google spills out in first 10 spots.
In reference to "user ratings" in germany was just a big article that more than 30% of this are fakes. U can buy 100 positive "user comments" for your online shop with 50 bucks. If google relies on this then good night.