The long-term sustainability of the kiosk system has been questioned because they can fall into disrepair and abandonment unless the resources typical of a school are provided. UK education researcher Donald Clark has accumulated significant support indicating that the typical fate of a site is abuse and abandonment, unless it is inside a sanctuary such as a school. Moreover, Clark found that the computers were dominated by bigger boys, excluding girls and younger students, and were mostly used for entertainment not education. However, all of Clark's work is in blogs and he does not seem to have any peer reviewed research publications.