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1.
A phrase used to describe the art of shopping at large numbers of yard sales, garage sales, and estate sales.
"I can't WAIT to go yard sailing this weekend!"

"Yard sailing is my favorite activity of late."

"There's nothing I would rather do than go yard sailing."
by www.babysue.com April 28, 2006
 
2.
Yardsailing is the act of driving around town searching for yard sales.

Yardsailing is usually done by people who buy random things for a cheap price and sell on eBay for way more than what it's worth.

Yardsailing is also practiced by people who enjoy going to yard sales for the fun of it.

A person who goes yardsailing is known as a yardsailor. Yardsailors typically wake up early, search newspaper adds, and stay out till every last yard sale has been sailed.

Yardsailors are not to be confused with passerby's who stop at a yard sale just to have a look.
"Check out that yardsailor! Man, his car is filled to the top with old yard sale junk!"

"WAKE UP! WE'RE GOING YARDSAILING!"

"Who knew this crappy chair I got for 2 bucks would sell for 40 dollars on eBay! I'm glad I went yardsailing!"
by Sarah Jayne September 03, 2007