I didn't realize hotlinking was considered "improper" here because it is allowed by the vbulliten software. Encouraged, actually, by this latest version, that doesn't allow the same pic to be uploaded twice.
That's what the little "insert image" button is for.
I agree, some other sites have pictures that wouldn't be appropriate here, right?
And many sites do not want their pics to be hotlinked because then you are useing their bandwidth, which they are paying for, for a different site.