In many scenarios, the "big" in big-data isn't the ultimate scale of the database so much as the amount of information loaded and analyzed each day. Marketers, for example, typically need to load and analyze lots of data as quickly as possible so the insight can be quickly applied to identify new segments and lists, and to improve targeting or creative content for the next campaign. If you know what's working sooner, you won't waste money on segments, enrichment data, or marketing appeals that aren't fruitful. To provide search, lead-generation and affiliate marketing services to publishers and advertisers, ad network Linkshare loads and analyzes tens of gigabytes of clickstream data per day, but the total database tops out at just six terabytes. Low-latency insight is now a competitive must for Linkshare. "Five years ago it was okay to give people yesterday's data, but that's not good enough any longer," says Jonathan Levine, LinkShare's chief operating officer.