My killer feature that led me to start using Pocket was Kobo integration: I could hit a button on my computer and continue reading an article on my ereader, duly cleaned up.
I also integrated my Kobo with Pocket with glee, but it turned into gloom when my saves ate all of the free memory of the reader :)
[0]: https://github.com/wallabag/wallabag
My killer feature that led me to start using Pocket was Kobo integration: I could hit a button on my computer and continue reading an article on my ereader, duly cleaned up.