We actually have quite a bit of data in there besides Twitter, and we're adding more sources all the time. It does take some time as we must convince publisher

We actually have quite a bit of data in there besides Twitter, and we're adding more sources all the time. It does take some time as we must convince publishers of the value of pushing their data out. Some of the result set you get depends on your query. One of our initial prototypes was launched for the Obama inauguration, and the amount of photography going through that day was amazing; it was almost like watching a strange kind of television. We don't think that real-time search is the best thing for every query. We estimate that about 20% of queries would be better served by time ranked data. Think about all the situations in which time is the most important factor: decision making (such as stock trading), weather, news, television, etc. Sometimes a person just wants to know about earthquakes in general, and sometimes that person wants to know about the earthquake that just happened.