For everyone wondering about the "OMG" and mixed-case comments, they're there randomly appearing and I presume they're intentional and there because of the date today.
Yes, it is annoying. The best way around it if you open a comment for which you'd actually like to see a regular title and non-mixed case text is to open the comment on a new page (click on the time/date at the end of it) and the click "refresh" on your browser until you see a regular subject and normal text.
Hopefully the admins will realize that this will drive down traffic and be bad for ad revenue on the site today.
April Fool drives me nuts precisely because of silly things like this that get in the way of normal business. Couldn't we have changed the logo or posted a fake story like "Hillary drops out!" instead?
Update: OMG!
Update 2: Now YouTube embeds instead! OMG!