"Obviously the attitude of a lot of folks has changed lately. It may be the consensus among people now, that it isn't necessary to give credit. I'm saying it wasn't that way in the past."

No, it is still the same as it was back then. I remember well, those topic threads 4 to 5 years ago, when I was a newbie, asking the same question, and the odd post once in awhile to date including this one. The majority consensus, No need to give credit for payed content. But common courtesy for free content. Just do a search in the forums and you will find those threads.

 

"Personally, if I use an item that I'm particularly happy about, I will credit it in my comments reguardless of where I got it and if it was free or not.  I think a fair number of folks do too."

That was pretty much the majority answer. Thats how I do it to. But, no one is obligated to give it.