Well I meant rather disposing off the ISS somewhere around Earth where they could scavenge stuff from it at a later date rather then let 450 metric tons of potential material burn up in the atmosphere. So whenever we abandon it we could just attach a big honking tug and put in some graveyard orbit. Hell once we get space tugs operational we should just put all those old satellites and other salvageable space derbies floating around into a big space junkyard. Then maybe the junks mutual gravity will pull all that junk conveniently together and form what could be called a 'junkotroid' for ease of salvage.

Didn't they say they were going to actually test this on the ISS itself around 2011-2012 or so? Also would disposing of the ISS in one of the L points for parts and stuff be a good idea? The VASIMR engine should be good around 2016-2020 right, so it shouldn't be that big of a leap I suppose.