"Cutts offered some suggestions to webmasters"

"Think about concentrating on a smaller topic area, one niche, and ... make sure you cover it really, really well," he said. "And then you can sort of build out from that smaller area until you become larger and larger and larger."
http://searchenginewatch.com/article/2342222/Googles-Matt-Cutts-Small-Sites-Can-Beat-Large-Sites-in-Search-Results