Unusual options activity(UOA)

Anybody play this here?

what does livevol provide on Unusual options activity?

I know TOS has the sizzle index ...

The Sizzle index is a measure of the current option volume vs. the past 5 trading days' volume.

http://www.youtube.com/watch?v=4Wd-lJs8pAc

I know Andrew Keene makes a living with uoa.

Any other resources on uoa?
 
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