Blogchalking?

Blogchalking is certainly strange. A little code snippet to give "you the opportunity to disclose something personal without revealing too much"

searching revealed too much ...

I have no idea what this is.
They tell me I should put this in my blog:

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Blogchalking has been superseded by other, more effective markup techniques. Thus, I am officially abandoning what I had de facto abandoned quite some time ago.

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