The HTML source of the A Vast Emptiness blog post conceals these codes:

[1] werrrxxoccerrwxxocccewxxocccewxxxcccerrrxxoerrwxocccewxxocccrc
[2] lvvydevvvgmpfylvfelwtnsejmmttmvdzslmnmlhmomlo
[3] 110112-4111159231301682-51221311401421511671111-613212015

Code #1

Observations

There is a limited set of letters, also a lot of repetitions and runs of the same letters can be seen.

[hint]
Using Atbash, we find something that looks familiar:
dviiicclxxviidcclxxxvdcclxxxvdcccxxxviiicclviidclxxxvdcclxxxix
[/hint]

Code #2

No solution is known at time of publishing.

Code #3

No solution is known at time of publishing.