I think these are used as botnet command and control information. The bots randomly surf the web till they find a sequence of words or numbers that match some preprogrammed checksum or signature, and use some of the numbers as instructions of what to do.

The controller's of the botnet then spam the encoded instructions on comment sections all over the web.

This is what happens when a big company (in this case Google) is abandoning a former popular product. The spammers take over

Those are lottery results from some province in Vietnam. I have no idea why they appear in the comment section.