spool is great but my only complaint is that it sometimes takes forever for an article to download. I dont want to wait half a hour/day to read an article I sent to spool but when it does download its really an amazing app!
I dont know how to contact you/message you on HN but there's one thing that has gotten a little annoying on spool; when you get to the bottom of the article - it brings up a big spool banner and this gets in the way of finishing up reading the article. I'm not sure if this is a bug or a feature but it's a little annoying :-/