Ok, twitter and facebook won't work for this post, and no way in hell i'm posting in the comments section on news sites.

The bombs that exploded in Boston yesterday were technically unsophisticated weapons. The white smoke following the fireball is characteristic of a rapid combustion event, such as black powder, not a chemical explosion, such as plastic explosives or gunpowder-laced nitroglycerin (TNT). ANFO, another rapid combustion based propellant, leaves black smoke after combustion due to the inclusion of diesel or heating oil as the oxidizer.

So, if it's a black powder or similar explosion, and it used BBs or ball bearings, as news organizations are saying, that means it used materials that you could gather in a shopping trip to Walmart and Sportsman's Warehouse - black powder, BBs, a digital watch w/alarm, a primer from handloading (or even just a bullet, any caliber, any cartridge), and a container.

that's technically unsophisticated.

We know from two different wars in Asia that our opponent force there is very sophisticated, in the type of explosives, in the manner of delivery, in the activation device, and effectiveness of the placement.

I'd be really surprised if we find out this attack comes from a foreign source. They'd either be really stupid or really smart. I can't decide.