hupihuutaja

Etymology
. Likely coined by users of the online auction website Huuto.net.

Noun

 * 1) a person who wins a bid in an online auction but doesn't complete the transaction, thus wasting the seller's time by necessitating a restart of the auctioning process and/or a relisting of the item
 * 2)  a person who engages in similar activity on other types of online marketplaces