Complaint Thred deleted with no notice to the posters?

I_am_learning

Yesterday, a new guy was posting some threads in Electrical Engineering one of which was regarding transformers. I got interested in it and had posted a line. The question seemed ununderstandable to me. Is that the reason why it was deleted?
I don't care if its deleted for some reasons, but I was in view that atleast the posters should be informed so that they don't keep searching it.

Hurkyl

It wasn't a real poster, it was just a spammer.

I_am_learning

I see. I had a feel for it. It (we use 'it' for spammer) was posting too many threads.

Borek

His posts were copies of questions posted on other sites, like eng-tips.com.

Try this google search to see for yourself.