y Y. The brighter the dot, the more 
    data this peer has.
    </dd>
    <dt>What is the data exchange strategy?</dt>
    <dd>In this animation, peers exchange data <b>randomly</b>: they randomly 
    pick some other peer, and give him some random part of their own data.
    <dt>What are the advantages of this strategy?</dt>
    <dd>Random exchanges maintain optimal load-balance: all peers have 
    approximately the same amount of data. This means that no peer is overloaded 
    and no peer is underutili