As everyone knows by now, Boston was the scene of two bombings on Monday at the Boston Marathon and the JFK Library. For coverage of that news, Boston.com had a liveblog that it was continuously updating, and CNN had more details and coverage. Here’s what big technology companies did in response: Twitter is the news of first resort, the place where the news often breaks, and this event is no exception. The Boston Police Department is staying on top of the news with its Twitter account, @Boston_Police. And if any have video of the bombings or the period of time immediately preceding the attacks, please contact BPD — they want to see it. Twitter is monitoring the situation and has deleted at least one account that was trading on the resulting confusion and people’s desire to help: @_BostonMarathon, which was promising to donate $1 for every retweet.