I was a bit concerned about what to do after exhausting my attachment quota until I noticed the "Attachments" link in the User CP.
It shows how much quota you've used and lists all of your attachments so you can delete the obsolete ones.
Your old posts might look odd after its photo vanishes [[it leaves an "attachment nn" where the photo was) but that is a really good way to manage server disk space.
Now I don't have to feel guilty about Lowell having to mop up after me!
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