First, I assure you that I am not a troll, so thank those of you who who supposed I am for contributing here, anyway. There's a lot to respond to (I probably shouldn't have waited so long to come back here.. I never realized that this many people would respond to this thread).
I'm about half way through the spring semester, and have been impressed with the effects of vaping on my oral delivery of my lectures. Thus far, I have been observing about a 76% decline in my 'pauses' and 'senior moments'

Vaping immediately before sleep seems to shorten my latency to fall asleep, although I acknowledge that this may just be a placebo effect. However, I am certainly not adding to my already existing insomnia by vaping at night.
I started using Vuse e-cigs, but the cost was quite high. I then ordered some UnFlavored nicotine base (48mg 75% PG/25%VG)) from MyFreedomSmoked.com) along with a Beginners kit and I'm vaping it undiluted (that's about the concentration in the Vuse product). This has been serving my needs well.
Also, I took a three week break from vaping over the break between semesters and I experienced absolutely NO withdrawal effects, which doesn't surprise me since there really isn't any reliable evidence that nicotine produces physiological dependence (I'll elaborate on this later if there are questions, but read [Google 'discover magazine nicotine'] for an article that gives an accurate assessment of what, and why, I believe the way I do... BTW, in the lab I could never get rats to reliably self-administer nicotine, even after infusing them with it for 90-days in anticipation of a 'withdrawal' response)
I have created a 19 kb zip file with 20 abstracts and citations related to nicotine and neurodegenerative diseases (mainly Alzheimer's and Parkinson's) but I can't seem to be able to upload it (Help please ... I 'Managed Uploads' selected the file from my disk, uploaded it, and then nothing happened... it didn't upload).
John