Yes that would be unfortunate. I would like this to be a "crowdsource" tool, not a "mobsource" tool. I'm open to ideas on how to prevent that. Maybe moderation?
The AP[1] is reporting the bombs were in black duffel bags containing 6ltr pressure cookers. Make people look for them instead of "anything suspicious".
[1]: http://bostonglobe.com/metro/2013/04/16/some-areas-downtown-...