At least two explosions rocked the finish line at the Boston Marathon this afternoon, killing several and injuring at least a half-dozen of bystanders. Note: this discussion thread may contain violent or graphic imagery. Viewer discretion advised.

According to Gawker, the main suspect behind today's fatal shooting at a shopping mall in Virginia appears to have revealed his plan in advance on 4chan's /b/ board minutes before carrying it out.

According to Socialbakers, nearly half of Justin Bieber's 37 million strong Twitter" followers are fake.

In this latest online copyright scandal, Tokyo-based illustrator Katie Woodger is accusing the multinational media company of using her Alice in Wonderland fanart on its merchandises without any permission.

As the Internet remembers Britain's "Iron Lady" prime minister Margaret Thatcher, UK journalist Martin Belam's surreal prediction of Twitter's reaction months before her death has been making the rounds as well (via Salon).