PointCast Inc says what Marimba Inc CTO Arthur van Hoff claimed yesterday, that 18% of all internet traffic is PointCast updates (CI No 3,174), is hogwash. In fact, a 1996 study by Optimal Networks Corp, Palo Alto, California, shows PointCast traffic generated 18% of total HTTP traffic, in itself only a small component of total network traffic. Oh and by the way Arthur, PointCast says it’s now got four T3 lines, not three.