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Hard to tell from the anecdotes, and hard to tell from statistics, as there's so much under-reporting. Where else do you see reports other than this thread and your own situation? Do friends/acquaintances/colleagues talk about it a lot? If so, that could be a good indicator, but there are so many factors involved in how thefts get noticed that I'd always be cautious in trying to identify trends.
This summer is definitely seeing a rise in bike thefts.