Fair enough, I too readily dismissed your drive-by objection, however non-specific and snide. Scaling real-time anything is never easy. My main point was that c

Fair enough, I too readily dismissed your drive-by objection, however non-specific and snide. Scaling real-time anything is never easy. My main point was that cost effectiveness is what keeps GMail from offering a similar level of search quality. If Greplin can get a large enough fraction of users to pay for their service, the technical challenges are surmountable.