Proxy voting is simply delegating your voting power (1 BTS = 1 Vote) to an elected 'proxy'.

Proxy's are generally community members who follow the daily activities and may or may not be in a better position to vote on your behalf with a higher level of consciousness or knowledge.

You may just not have time to keep up to date with the stakeholder proposals and as such outsource/delegate your voting power to someone who has the projects best interest at heart.

Proxies are encourage to be open and transparent about their voting activities to keep their followers informed on the votes being cast.