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CARLSBAD, CA — Kara Swisher and Walt Mossberg are doing an excellent job of keeping out gossip-blog riffraff, but they're not doing so well at warding off the camp followers, according to attendees. Overheard in the hotel bar:

"Who was that woman in a blue taffeta dress last night?"
"I'm thinking escort."
"Oh please, there were at least four pros here last night."