The tradition, in some professions, of juding performance partly on the basis or portfolios, has spread. The possiblity of creating e-portfolios is adding zest to this interest. However, the educational appeal of portfolios and consideration of different platforms for e-portfolios, have eclipsed consideration of assessment costs.

Portfolios are know to be hard to assess with any degree of reliability and expensive to assess. Attempts to increase realiability multiply costs.