Except that at the time I post this, the image you wanted to add into your posts shows the hosting site's placeholder, which states "Please update your account to enable 3rd party hosting" instead of the image you wish it to be.
I think the attachment option would be better, as then the enworld forum will be "hosting" your image, in use on the enworld forum.
On topic Photobucket has decided they no longer offer free image hosting. Unless you cough up an exorbitant sum for a paid subscription (several hundred dollars a year! ) all hotlinked pictures show up like the one above, thus wrecking loads and loads of forum threads.
This happened after this discussion was active back in 2013.