Over and over; throughout my usage and management of online communities: Something has always been present and non-changing:

Memes kill online communities (when they're not moderated)

Cultures need memes to be generated. This is common sense.
However, nasties tend to create "maymays", which destroy culture.
From this point on, when I use maymay, consider it to mean "bad meme/s"

Maymays exist both in the online world, in the real world.

A wonderful example of a maymay is the demonization of Reddit which is prevalent on most online (*chan) communities. You, the reader, might be effected by this maymay. It causes masses to become paranoid of a Reddit boogeyman. You might think of this as irony or a joke, but I've actually encountered someone who refused to click a reddit link after I notified them that their screenshot had been maliciously edited. This person was a very close friend of mine; we were both moderators of an IRC channel, so I personally doubt he was joking around; he refused to click it due to "reddit cancer", Effectively sticking his head in the sand..

Another example of a bad maymay could be a logical fallacy which is embedded in your local culture. If you've ever been in a rural location in the United States, chances are, you've seen a culture effected by a maymay.

Back the topic of online communities:

I will attempt to weed out these maymays across NuChannel, and allow a culture to grow from this "purified culture seed" that I will be planting. 4chan's seed of culture was corrupted by maymays, and the administration has done nothing to rectify this. the XFAG maymay brings nothing to the table of discussion, yet is it prevalant throughout the website. I want *good culture* to come about this Channel.