15 YEARS OLD
Tim Berners-Lee put together the first web editor -- "browser" -- 15 years ago this week -- starting the WWW revolution. He started his own blog a few weeks ago.

They had to turn the comments section off on one particular post because so many people were leaving "thank you" notes to him that it was overwhelming the system. I read just a few of the 455 comments that were posted before they turned it off and realized that many of these people have livelihoods that came about because of his innovation. This provided an opportunity for them to express their gratitude.