This page contains spoilers about the Heartbound ARG. If you want to solve the puzzle yourself, avoid reading this article.
Getting to this page is a bit tricky. Each of the 4 pages given from GridLock has an image of there respective world. This suggests that we need something from each world in the order that there listed in. At the end of each a sentence in Darksider Glyphs appears. Translate them. They read:
DONOTTRUSTTHEM GIVEUPGIVEINGIVEOUT BURNBRIGHTBURNOUT SOMETIMESWHENYOUWINYOULOSE
Combine all 4 answers into 1 word and add that after the "DIVERGENCE/" in the URL for The Choice to arrive at this page.
In the page's source you will see:
<div class="Francis">
<!-- EGGEGEGEEEEGGEGEEGEEGEEGGEEGEEEEGEEEGGEG -->
</div>
The key word "Francis" tells us the cipher we have to use is the Baconian cipher. Using a key of A=E and B=G the above text deciphers to "NINETEEN".
We can now go back to the The Choice to solve the puzzle.