The website is here. There is a Facebook page. With the hashtag on Twitter.
Here are the rules:
On Twitter, Abby offers her own prompt list:
svslearn.com has lessons and tips for aspiring artists - $14.99 a month. They are mentioned in the video and introduction at the Inktober link. I am not interested but those who actually do this as a hobby might find it useful. SVS has some other content for Inktober.
Seeing the great work of artists doesn't intimidate me much. I have no illusions about my own skills but I hope that my skill does improve through the month. For simplicity reasons, I may post my drawings here once a week. In addition to the prompts above, I often try to draw examples for the subjects I teach. my work here may well include a carefully drawn version of my standard 'TH' pronunciation face. I'll have to check the textbook I am using these days to see what else is needed there. Otherwise, I sometimes like to look at a map or a building schematic while writing to see what actions are possible in the story - I know that I have written four people entering an odanathropter and eight climbing out at the end of the journey - and maybe mistakes like that will be easier to avoid with a few images at hand (Obviously, an odanathropter is an airship shapes like a dragonfly).
Here are some of Jake Parker's (the creator's) work from 2013. He offers these images in a book, so I have taken care to shrink them greatly.
The image below is from Jake Wyatt. It was posted on the inktober Facebook page on Sept 15, but I don't know how to link to a specific post on Facebook. Here is Wyatt's website and the image below has been shrunk. I don't know the first thing about ink drawing and wanted to see images with colour being used.