It's tough to say it has benefited the poor as a whole, or any group of people by income at that matter. It has benefited anyone who is technologically savvy, and if you so happen to be poor but good with computers or other technological inventions, than yes it has helped them.
I was on the train the other day and a guy was telling me how technology sucks, and that he used to be a toll booth collector, and now he's out of a job because of EZ pass, automated tolls. Well, yeah he's out of a job, which sucks, but he went on to tell me he was making $48,000 a year working at a toll booth and he got a pension. I then couldn't feel bad for him, considering I spent about that same amount to go to school get my degree, and am not even making that much yet either. Either way, he definitely wasn't poor but technology did not benefit him. But I also look at my one friend who is real poor, who know makes 80,000 a year right out of college, because he is smart with computers, and he's probably getting a raise this year to 100,000 a year. So it gives limitless opportunities for the poor, but you just have to take advantage of those opportunities.