I mean, so long as some kind of record is kept?

It would be a wealth of social information. Political events, economic crisis, the views of the common man of the time, all have been represented through memery. This is, in a sense, a journal of opinion with a wonderful look across spectrums. They also encapsulate humor, showing where it has and hasn't changed across generations.

Sure, a massive chunk would be highly irrelevant, but it's still a solid look into part of a wide culture.