Think it's only Apple faithful who are adding an iPad to their gadget cache? According to Chitika Research, that's not true. The online advertising firm keeps a close eye on which platforms are downloading its ads the most, and it says that Mac computers accounted for 10.3 percent of wasted bandwidth in April. That's up from 7.4 percent in the January - March timeframe (you know, the pre-iPad era), and Chitika Research Director Daniel Ruby says "90% of that increase was due to the iPad halo effect." Meanwhile, NPD analyst Stephen Baker believes that the boost is instead thanks to the new MacBook Pro models that were released at the same time, and Technology Business Research analyst Ezra Gottheil says "early data on the iPad indicated that most buyers were already in the Apple club." Who is right? Survey says... your guess is as good as ours, and any of theirs, apparently.