I came across the word "BlackBerry-ing" in this New York Times article introducing New York governor Andrew M. Cuomo’s "Kitchen Diplomacy."
More grizzled legislators were less impressed, with one senator recalling that during a question-and-answer period, "I was in the middle of BlackBerry-ing."
Though I guess it's a figurative remark insinuating "sit on the fence," I may be wrong. I have no clue where to find out what "BlackBerry-ing" means from the context of the above sentence. Can anybody tell me?