Obviously -- one of the hard things, Kara, is similar to page rank if you are a search engine, you are worthy of things like being one of the default search providers when you are large enough.

显然 - 困难之一，Kara，如果您是搜索引擎， 则类似于网页排名，当您足够大时， 您值得成为默认搜索提供商之一。