> Im confused - so my collection of posts is contained under "category +me"
Yes
> Does it post inline images from within the body of the email? I must have missed that part.
Yes! You can include anything you can with HTML and e-mail. You can even include a .js or .css file!
> By your definition, HN would be a blog - as I can post to HN, and it just shows up under /new I just happen to be the poster...
With Hacker Spring, it's both a blog and an aggregator. HN can be used as a blog by doing a text post! :-). Hacker Spring just has a bit more features to customize your site since it's fully geared toward this.
> You can delete emails by just sending $DELETEME.
Does that still fit with the view that this is suitable for “Grandpa and Grandma” if it exposes one’s email address? Shouldn’t a service intended for non-technical audiences take more care in not exposing the users by default?
There are more commands available in https://hackerspring.com/faq
It was considered to do 'unlisted' posts, but in the end, what's a blog if it's not for worldwide publication?