They seem like a meta-tags.
Should they be burninated or is it useful to keep them and clean them up somehow?
closed as off-topic by bluet, Martijn Pieters, Shadow Wizard, Aziz Shaikh, nicael Dec 9 '14 at 14:35
This question appears to be off-topic. The users who voted to close gave this specific reason:
BURM THEM ALL!!
All of those types of questions seem like gimme-codez...