Habra error?

I tried to write a message to Google blog to which I am connected, but the system issued a message:

Oops!
Dear Habrachelovek, early you clicked on this link.
You can write to this collective blog only after joining it.
Try to click on the magic button on its main page (to the right of the title) or write to another blog.

Not strange and not clear ...
')
Addition
As Mr. Jan_May correctly noted, if you publish a message on your blog, and then proceed to editing it, you can move this news to other blogs.