The US last week released its 2007 wiretapping stats, and they show that such surveillance is up a full 20 percent over the year before. The number of non-secret wiretaps is higher than it has ever been in the last decade, and not a single application was denied in all of 2007. If you're concerned about privacy, though, the report makes clear that you're statistically unlikely to be targeted unless you use a cell phone to run drugs. Murder might also earn you a wiretap, but apart from that, the authorities don't seem to use wiretaps in all but unusual cases.

,208 wiretaps were requested last year, up from 1,839 the year before, and the vast majority of them were run by state authorities; only 457 wiretaps were executed by the feds. No applications for wiretap were denied, but this is hardly uncommon. Since 1997, some 15,000 wiretaps have been made, but only four applications were rejected in that entire time.

When we look at the prevalence of wiretaps, two trends stand out. One is that taps are almost exclusively used on "portable devices," including digital pagers and portable phones. In fact, 94 percent of all taps authorized last year were for such devices. The second trend is that most wiretaps are used in narcotics cases. 81 percent of all taps were for drug-related crime, with murder and assault coming in a distant second (6 percent).

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Wiretaps apparently have something in common with shopping at bulk retailers; when you buy more items at once, the price goes down. The cost per intercept has been dropping since 2003, when it peaked at $62,164. In 2007, that number had fallen to $48,477 per investigation. While that still sounds pricey, the report notes that drug intercepts have often been used to make big busts. One set of 2007 wiretaps in Morris County, New Jersey led to the arrest of 105 people; another, in New York, scooped up 51 people, 48 of whom were later convicted. Another 57-day wiretap in California led to the seizure of 40 pounds of methamphetamine, four kilograms of cocaine, and $700,000 in cash.

Of course, those are just regular warrants. The Justice Department also released information this week on secret warrants issued by the Foreign Intelligence Surveillance Court. These numbers are also rising, and have been going up since 2001; the increase is a dramatic one. In 2001, the Court approved only 1,012 applications, but approved 2,370 last year.

The ACLU said in a statement that "the ever-increasing reach of government surveillance should be disturbing to anyone committed to constitutional values. Pervasive surveillance, besides eroding the right to privacy, deters innocent people from participating in the political process and from exercising their freedoms of speech, association, and religion. It has a chilling effect on activity that is absolutely necessary to any democracy."

And neither of these wiretapping numbers have anything to do with the warrantless surveillance being conducted on phone and Internet traffic by the National Security Administration. So take back all that I said above about surveillance only being used on drug dealers with cell phones. The truth is that we simply don't know how much total government surveillance is being done, who is being looked at, and what sort of information is being examined. If Congress ends up granting the telecom companies that participated in the program the immunity they crave, we may never know.