Hi,
it seems that sysops often submit edits to the Main Page that don't actually change anything, and in their edit summary they give vague indications of caching problems.
Now apparently they came up with the idea of placing an HTML comment in the Main Page, <!-- cache purging value: red-->, and keep changing that word ("red" in this case) to something else.
This strikes me as a major pollution of the article history as well as wasted effort.
What is this all about? What is the caching problem? Can it not be solved by technical means?
Thanks, Timwi