BrightSpark Education says the online tutoring is used only as an addition to supplement regular teaching.

VOA: special.2011.04.21

Only 6% has moved online.

只有6%在网上进行。

斯坦福公开课 - Twitter之父Jack.Dorsey演讲：好奇和灵感的力量课程节选

The Seattle Post-Intelligencer has become America's first major daily newspaper to publish online-only.

VOA: special.2009.03.21

Some people think it could also go online-only.

VOA: special.2009.03.21

And what was once an online destination only for college students has expanded, says Michael Nelson.

VOA: standard.2010.07.23