Acting PC: While magazine news is preempted this week, I wanted to follow up on an item blogged last month. Late yesterday, Ziff Davis announced it will reclassify about 20 percent of PC Magazine’s circulation from paid to non-paid. Still apparently blaming Time Inc. subsidiary Synapse Group, a subscription agent. It will reclassify about 260,000 of its 1.2 million subscriptions from 2003 and the first half of 2004 from “paid” to the category of “analyzed non-paid” under ABC circulation rules. The total circulation figures remain unchanged.