Mario continued to work mostly independently on Twitterfeed for many years, maybe up until now.

Legend has it that one of the motivations for the acquisition was to help with a work visa situation for another employee from the UK, Mike Dewar. He was a graduate student in NYC who did an internship (or similar) at Bitly, but had to move back to the UK when he finished/discontinued his studies. So they had Twitterfeed hire him, then acquired Twitterfeed, then he was able to move back to the US office. Just hear-say from long ago, I don't recall any details :)