Somebody who spends an absolutely inordinate amount of time surfing the internet to buy things, usually collectibles or household items they
don't need. At all.
Some e-shopaholics are known to invest in a useful product then buy
everything associated with it, but in either
case they often come close to bankrupting themselves.
John: Honey, where did all your
money go this month?
Jane: I spent it all on the internet.
John: Oh dear lord, you're an e-shopaholic!