Mobile cell phone cameras to monitor the intended target... Nokia 6210 Navigator and its GPS utilities used for marksmanship and border crossings.

How about voice modification software to alter voice patterns when making calls...

How about using some of these mobile applications with Twitter?

What's Twitter you say,

Twitter describes itself as...

"Twitter is a service for friends, family, and co–workers to communicate and stay connected through the exchange of quick, frequent answers to one simple question: What are you doing?"

In other words Twitter is a real time communications application on the Internet.

"Twitter was
recently used as a counter surveillance, command and control, and movement tool by activists at the Republican National Convention,"

The above was in a report found on the  the Federation of the American Scientists website.

Wired Magazine reports in a recent article...

"For years, American analysts have been concerned that militants would take advantage of commercial hardware and software to help plan and carry out their strikes.

Everything from online games to remote-controlled toys to social network sites to garage door openers has been fingered as possible tools for mayhem."

Should we be concerned?