Hi Gary,
Thanks for the feedback :). When I first started teaching online I still relied on my natural instructional methods which are fairly "laid-back". I ensure that the students understand the concepts and methods that we work through, but use positive reinforcing techniques that place emphasis what they are doing properly and then build upon that to show where a particular element/concept needs to be improved.
My e-mail etiquette and style is a bit less formal that what I generally see promoted for instructor interaction. I use a lot of ':)', and insert a fair amount of humor into my discussions which I know can be a delicate balance.
On-the-whole though, I have found this to be a very effective way to create a bond with the students that I never see face-to-face and generally receive comments in my instructor reviews that reference their appreciation of my approach, the use/over-use :) of ':)' and grading comments that focus on the positive (generally ending in something like 'Keep up the good work!').