When someone creates an Etsy Treasury, they typically send an email to those whose works they’ve included, which is how I know when one of my pieces has been in a Treasury. However, its not automatic or mandatory to let the creator know.
Fortunately, Etsy now has a search facility for Treasuries (though only going back to late April 2010). And doing a search for my Etsy name — RhondaMadeIt — resulted in me finding pieces of mine listed in at least four Treasuries I knew nothing about! Pictures below (click on the image to see it full size):
Rhonda Bracey: At Random 
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