With more lawmakers creating Facebook pages, activists have found a new way to get attention.

This week, students and human rights activists planed to take over the social networking pages of four lawmakers by filling their walls with comments about an upcoming bill. They had limited success, but their action shows how technology   is changing the face of protest.

The Center of American Progress, a liberal policy group based in Washington, D.C., led the Facebook action.

They targeted lawmakers who sit on the committees that have to vote on the Conflict Minerals Trade Act (HR 4128 ) before it reaches the House floor. The bill addresses concerns over how minerals use in electronics are mined in Congo and penalizes importers of what it dubs conflict minerals.

On Wednesday, a dozen comments littered the Facebook pages of Reps. Ileana Ros-Lehtinen (R-Fla.), John Tanner (D-Tenn.), Sander Levin (D-Mich.) and Dave Camp (R-Mich.).

"Don't let the Congo down dear Representative," one Facebook activist wrote on Levin's wall. But the comment shared space with others about Republican National Committee Chair Michael Steele.

It's unclear whether Levin, who hasn't posted on his Facebook wall since March 5, even noticed.

This action wasn't big enough to hijack the lawmakers' social networking pages as organizers had hoped. But if hundreds of activists did the same, Facebook could become a new battleground for demonstrators.

-- Ambreen Ali, Congress.org