The first problem is how you get your students. I teach academic writing over the net- I don't do fixed times and not necessarily every day. I don't simply correct- I often record comments over a piece of their writing, then meet online and discuss the points via VOIP or messenger. However, it is not always easy to find students- I have noticed that a number of sites that went up offering online lessons have gone down; contacts are the most useful IMO.
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