(CNN) -- As the Internet's popularity continues to surge, so do the voices of critics who warn of the dangers that lurk in the vastness known as the World Wide Web.

The anti-pornography sector may deliver some of the loudest criticisms, but more and more another complaint is rising: Beware of websites that educate visitors in the ways of death and destruction.

Ever since the Oklahoma City bombing killed 168 people in April 1995, the Internet has been blamed for providing information on bomb construction.

There are literally hundreds of sites that take only minutes to find which offer instructions on making car bombs, firebombs, mail bombs and similar devices.

To date, efforts to regulate bomb sites, pornography sites and other controversial destinations have failed. The lack of regulation may be a victory for free speech, but is it compromising public safety?

"The Internet presents our society with unprecedented challenges on how to balance freedom of speech with public safety," said Susan Kennedy, an aide to Sen. Dianne Feinstein, D-California. ( 289K/6 sec. AIFF or WAV sound)

Kennedy is helping draft federal legislation that would punish people who put potentially dangerous information on the Internet. Under the proposal, a content provider who knew such information could be used in a crime could be prosecuted as an accomplice to a crime.

"That's what this legislation would do, it would hold people responsible for their speech," Kennedy told CNN. ( 128K/11 sec. AIFF or WAV sound)

The American Civil Liberties Union says laws limiting speech on the Internet haven't held up in court.

"The Supreme Court has said that this kind of dangerous speech is constitutionally protected unless it is likely to produce imminent lawlessness," Gerry Weber of the ACLU told CNN. ( 111K/8 sec. AIFF or WAV sound)

But does the availability of bomb making instructions imminently lead to reckless behavior?

Police in Oregon say 15-year-old murder suspect Kipland Kinkel probably did some Internet research before he launched an firearms attack in his high school cafeteria on May 21.

Rick Lockridge reports 1 min. 45 sec. VXtreme video

Susan Kennedy, "... with a click of the mouse ..." 1.1 M / 31 sec. / 160x120 QuickTime movie

Kinkel is accused of killing his parents at their family home, killing two schoolmates at Thurston High School, and injuring more than 20 other people at the school.

Police also say Kinkel booby-trapped the family home. Investigators found five "sophisticated" devices in the residence. They say the teenager possessed advanced bomb-making skills.

"That would require more than just cursory inquiry," said Sheriff Jan Clements of Lane County, Oregon, speaking of Kinkel's alleged knowledge of bombs. "It would require some research on the part of the person ... manufacturing these devices."

As far as Kennedy is concerned, all bombs are inherently lawless.

"If you can think of one legitimate reason ... for a light bulb bomb, a baby food jar bomb or a bomb made to look like a telephone or a burrito, I'd be interested in hearing it," she said. ( 128K/10 sec. AIFF or WAV sound)

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