This year, Percona introduced Community Voting for
Percona Live submission. This is what you can read on the conference website:
In an effort to involve the larger community in the selection of speaking sessions for the 2016 Percona Live Data Performance Conference, we’ve implemented a community voting process. After a speaker submits a proposal we encourage sharing to the community and social networks for a vote. The more highly ranked proposals will continue onto the next phase of the voting process with the conference committee.