Follow-Up Poll: AU versus AR

Alright, people - I ran into a definition problem with yesterday's poll. Basically, I used the options Alternate Universe (AU) and Alternate Reality (AR) because those often turn up as categories in archives, but I have no idea what they mean exactly.

Ok, I do know what area they cover - from 'nonmagical AU' to H/D as dragon riders in a fantasy dimension to Harry-in-Slytherin to Sirius/Remus living happily ever after after the war, no Veil. But the difference? Not a clue. So...

( Vote/Define Stuff )

And abuse the comments if you run out of space!

(no subject)

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A HAPPY LATE BIRTHDAY TO waterbird AND rushlight75,
AND AN EQUALLY HAPPY EARLY ONE TO aphoenix2007!
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Also, I'm *so* learning to filter! Always felt it was a mildly dodgy tool to shut up people without them knowing, but heck - I *need* to have a way to read newsletters and communities and stuff individually. Having all of those on my f-list makes me overlook so bloody much. This feature actually *is* useful...

*goes back to work*