i don't see any links in your profile??
but i can see all the pics/gifs in your request thread? so if people can't, maybe it's a browser issue? or the wifi?
Sometimes web pages prevent hotlinking by restricting access to clients who have accessed the image through the website itself, giving 403 (Forbidden) to anyone who tries to access the image without visiting the website where it's hosted. It might eventually start giving 403 to you as well, if you wait long enough and/or clear your cache.
If you're trying to host images, you can use postimages.org to host them for free. Like Caramel and Vek said, most sites don't want to have to retain your media and host it long-term unless they gain revenue from it.