rullywowr writes: "A story run by local new NBC10 of Philadelphia last Friday illuminated the fact that this particular rider of the pubilc bus system is packing a cell phone jammer and is not afraid to use it. Going by the name of "Eric," whenever he sees someone being "rude" on the bus and talking loudly on their cell phone, he screws the antenna on a flips the power switch. Regardless of the steep civil penalites levied by the FCC (up to $16,000 USD), many (such as "Eric) are still interested by these devices which can be bought on the internet for $40 to over $1000. Opponents of these devices say that not only do they interfere with mobile phones, they often can interfere with "behind the scenes" communication, Wi-Fi, etc. Despite being illegal, TFA points out that they are readily available on the internet (what else is new?). Do you have an instance where you experienced the positive (or negative) effects of a cell phone jammer?"