What's the difference with Manga and Doujinshi?

Random suggestion time. I believe it would be a great improvement to the overall looks of the forums if quotes would automatically convert stream and img tags to url instead (Or something similar.), preventing the same huge-ass picture and video frames from being quoted again and again all over the page. Thoughts? And how complicated would be such a change?

I think this wouldn't be needed if the person who is quoting take some seconds erasing the img or stream tags by himself.