Let's say you have written an article in one of the forums. It might be a tutorial, a general "How to do something" item, or some other sharing of wisdom/knowledge with your fellow photographers. It took you a while to create.
Some time later you find your article on another photographic website, repeating the knowledge sharing but not giving any accreditation to you for writing it in the first place.
Do you just feel flattered that someone else has picked it up, and happy to share the knowledge even if it's unaccredited?
Do you feel irritated, but don't pursue it?
Do you get furious and demand that the site acknowledge your authorship?
Do you spit the dummy, contact the site owner and demand it be removed?
Do you realise it's all a dream because you have trouble stringing two words together at the best of times?