The Twitterverse has been full of web users giving their thoughts on the top tech issues of the past seven days. From Anonymous' take-down of 40 child pornography sites, to 20 petaflop PC. Here's our five favourite tweets of the week.

UK gov't asks Google to remove 333 pieces of content from the web

We were shocked to learn this week that the UK government asked Google to remove more than 300 pieces of content from its web services, with 135 being videos on YouTube the government deemed a threat to 'national security'.
"UK gov't asks Google to remove 333 pieces of content. 135 were YouTube videos with potential 'national security' threat," we tweeted.

Netflix will launch in the UK in early 2012

It wasn't all bad news this week though. US online movie streaming service Netflix revealed it will launch in the UK early next year. The service, which has not been given an exact date for a UK launch, allows web users to watch an unlimited number of TV shows and movies on a number of internet-connected devices including computers, internet-connected TVs, games consoles, smartphones and tablet PCs for a monthly subscription charge.
Editor MattJEgan said "Netflix will launch in the UK in early 2012."

Anonymous claims take-down of child pornography site

The hacking group Anonymous brightened our day by revealing it had switched intentions from big corporate firms such as Sony to child pornography sites. The hacking group took down some 40 sites including Lolita City, which could be accessed via the Tor network that allows web users conceal their identity when surfing the web. It also posted the personal details of 1.500 users of these sites online.
"Anonymous claims take-down of child pornography site," we said in a tweet.

Cray to build 20-Petaflop system

The global race for ever-faster supercomputers is getting a new entry. Cray announced this month that it won a contract from the US Department of Energy's Oak Ridge National Laboratory to build a system capable of up to 20 petaflops of peak performance. The deal is worth more than $97 million, the company said.
Associate editor RosieHattersley said: "Battle for world's most powerful PC continues. Cray is to build 20-petaflop system."

New campaign wants Brits to use 'extra hour' to help others get online

Finally, Deputy news editor CarrieSkinner tweeted about a new campaign that wants to encourage UK web users to pledge just one hour of their time to help Brits that have never been online get access to the web. The Give an Hour campaign is the latest move in the Race Online 2012 initiative, which was launched last year by UK Digital Champion and founder of Martha Lane Fox, in a bid to get all working Brits online before the end of the current parliament. The campaign wants each of the 30 million people who use the internet everyday to use the hour they gain when the clocks go back on October 30 to help someone they know get online.
"Martha Lane-Fox wants Brits to use 'extra hour' when clocks back to help someone get online," she said.