Subsocial launched the Dotsama token claim as a way to reward early adopters of the substrate network. The goal is to distribute 1,000,000 SUB tokens to active Dot and Kusama users. There have been two successful rounds, with first starting on September 25th and the second on October 7th. Subsocial distributed 250,000 SUB tokens on a first-come, first-served basis to 2,500 accounts in both rounds.