Thread closed.

This is most likely a resource troll, i.e. an attempt to divert resources from Qt developers who are in need of help to the troll's "problem".
The long term goal of that is usually to frustrate the advanced people on the forum, making them leave or show up less often, resulting in lots of unanswered threads, making the forum look bad.

No idea why QtCentre is targetted but it is not the first time.

If any of you is also spammed in the PM Inbox let the Admins know.

Cheers,
_