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of, relating to, caused by compulsive spending, emassing large collections of items, junk, of interest.

One affected with Junkitis.
A typical Junkaholic is when a person spends all of their spare time going to flea markets, yard/garage sales, shopping malls, thrift stores, online sites, endlessly searching and buying items of interest.
by Panthera Atrox January 24, 2011