If these accounts are not posting any nodes, is there really an issue?
It is, though arguably not much of one, considering the low volume.
But setting aside the strict definition of "posting", the spam user has already posted one node - his homenode.
We should not tolerate any crap in a homenode which we wouldn't tolerate in any other kind of node.
Are you posting in the right place? Check out Where do I post X? to know for sure.
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Want more info? How to link or
or How to display code and escape characters
are good places to start.