Do i need to post on imgur community?Or i can keep that hidden?
This forum uses hotlinks from outside servers to display images. So yes, you need to post image to imgur server, but it doesn't just imgur, you can use imgbb, postimages or cloud/image hosting services available on the internet. However, from each of these services, you can upload without registration, and another need to register. And remember all service have the right to delete your image, when it happens your image on your post or thread will be error.