You need 2 votes in the first 3-4 minutes or so. After that the number starts increasing. This is just pulling things out of thin air, but from the looks of it, the system increases the amounts every period.<p>i.e.<p><pre><code>   First 2 minutes? 1 upvote.
   4 minutes: 2 upvotes
   6 minutes: 3 upvotes
   8 minutes: 4 upvotes
</code></pre>
etc