curiously, 4629 tweets a second is 4 million a day[1], which is more than the number of rows per day (3 million).<p>this must be someone not thinking, right? i don't see how they can have less rows than tweets. even with de-duplication of repeated text they still need a key (and timestamp) per tweet.<p>oh! and it gets worse. the next line says "400 million new tweets a day". that one must be plain wrong (it's a rate 100x higher than the number per second), given that the other two are (comparatively) consistent (it would also mean an average of 3 tweets per day per active user (140 million), and i suspect they define active user to be anyone over 1 tweet per month...).<p><i>so the section "by the numbers" contains four items, but only two independent values. and appears to be inconsistent twice.</i><p>[1] almost exactly - presumably the per second value is derived from a rough figure for the daily value.