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The red line in the previous chart, broken out into the amount of spam received daily (top red line), automatically filtered (top triplet of lines), dealt with manually (bottom triplet), and an exponential regression of the data. The triplets show the daily count of junk messages (greenish), a weekly average (blackish), and a four-week average (bluish). The blues lines best indicate the trends of ever-increasing spam. Note the interesting dip during the summer months. Do spammers go on vacation too?

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