Thanks Fico.
Mankie, as for your question in the other thread, even though it now seems Al-Qaeda might be behind the attack, it´s still not sure. Responding to your question, if ETA was behind this attack, this would be a very similar situation to what happened in 1998 (I believe it was August of that year) in Ireland when the Real IRA put that bomb in that small town killing some 30 people. That attack in 98 was a clear sign that the military side of the IRA was almost over and that only a few radicals didn´t want to accept the truce and then put that terrible bomb. If ETA was behind this, it would be the same thing, a sign of how close ETA is to disappear. Today, for the first time in ETA´s history, Batasuna (the equivalent to Sinn Fein in the basque country) condemned the attack. I doubt this is a political move, but rather that either ETA was not involved in the attack or that they are about to disappear and a small faction decided to do this terrible thing.
However, no one knows who did this now. The only thing I am sure is that the Spanish government are a bunch of assholes, a few minutes after the attack the government was politicizing it to try to take advantage against left wing parties and small regionalist parties in other parts of the country.