Voting for Mech Crusaders on external ranking sites is a way to not only support the game but also gain energy.
Through the 'Vote' pane you can vote for Mech Crusaders on Mp100, OnRPG, and M-100. These sites keep track of the number of votes each game receives and creates a ranking. Players are rewarded an energy bonus based on the average ranking of the game over all the vote sites.
Secondly you can vote for Mech Crusaders on Apex, BBOGD, and TopWebGames. These sites confirm that you have voted and as such you receive a vote point each time you vote in 24 hours. Collecting more than 4 vote points gives a 20% bonus to the energy earned from voting on the first 3 sites.
The energy earned from voting is put into your reserve energy pool.