Al-Qaeda's north African wing has said it was behind suicide bombings at UN offices and a court in the Algerian capital on Tuesday.
Al-Qaeda says it struck the "slaves of America and France"
The Algerian government says 31 people were killed - local hospital sources put the figure at more than twice that.
The BBC contacted several Algerians who emailed the website, for their reaction to Tuesday's events.
THE SOUABER FAMILY, ALGIERS
Via a relative in the UK
Uncle: I was selling goods on my market stall when the bombs went off. I hoped my family was OK.
Cousin: Whoever did this doesn't want Algeria to be a nice country. They want people to think that Algeria is a country of terrorism - which isn't true.
Uncle: I am 100% sure that Abdelaziz Bouteflika can control the terrorism. I wouldn't want anyone else apart from him in charge.
Auntie: I think I felt a lot more scared in the 90s than I do now because I think the government has a lot more control over the army and terrorism. Before, I never felt there was that kind of control.
Grandad: I hope that there will be world peace. This terrorism is happening all over the world and it's not nice.
I'm an Algerian engineer and I live and work not far from the UN building in Hydra.
There are two primary schools nearby - I thought about my six-year-old
I was in my office at the time of the blasts, I thought our building had been hit, it's hard to describe the shock.
There are two primary schools nearby - I thought about my six-year-old child.
It was terrible, I was in tears, I didn't understand what had happened nor where it was.
I went to the UN site this lunchtime and they're still searching for missing people.
This violence is different from what happened in the 1990s. Then, we couldn't go out without expecting to be killed at any time.
Now, we can go everywhere with our children - the violence has decreased considerably. But what can we do against suicide bombers?
As an Algerian citizen, I reject the violence, I reject Islamism and the Islamists' ideology. We want peace and love and we wish for a better future.
I was at work, at the Algerian state televison headquarters, which is about 2km (1.25 miles) from the UN offices, when the first blast went off.
I don't reject the possible involvement of the US or the West
Clearly, there is a huge lack of security in my country. The government is not fulfilling a key obligation to protect its citizens.
I don't know who is responsible, but I don't rule out this al Qaeda-linked group, nor do I reject the possible involvement of the US and some western countries. Even Morocco could be involved.
I entirely disagree with Bouteflika's government and its policy. I don't believe it is capable of doing anything good for the country, or pulling us out of this nightmare.
This is all very different to what we lived through in the 1990s. Now we have more security - but there is less freedom of speech and less social justice. Corruption has found its way into all state institutions.
Our money buys much less than it used to and life is becoming impossible.
I am so angry! It was terrible, so many people have been killed and injured.
People are afraid and don't understand the real targets of these bombings. Is it Algeria's economic policy? Tension over the increased competition from foreign companies?
People think there is a strong link with events in Iraq, oil prices and American foreign policy.
Or is it linked to the next Algerian presidential elections, due in 2009?
Also, I mistrust all this analysis about "al-Qaeda in the Maghreb".
ABDELLAH AMMOURI, ENGINEER, ALGIERS
Our country will not tolerate these acts of terrorism.
Our president needs help. He is trying so hard to do this alone, but it's obvious that other countries like the US, the UK, Canada and EU countries need to help him.
When those responsible are caught and tried in a court of law, they should face the death penalty. They must be shown zero tolerance.
These people are trying to undermine my government and turn us into an extremist Islamic country.
That will never happen, my country will never, ever become like Afghanistan.