Hacker News Reader

Is there a bookmark option? If you can let me bookmark and tag or group them, I'll buy it instantly!

Yes, that would be great (+ chronological front page, which is the deciding factor for me).

Yes you can add bookmarks to instapaper.

Hmm...not quiet what I want. I want to group stuff I've read and want to keep by tags, like python, JavaScript, etc.

Thats a good idea!.Will think about this! For now you can save the search query 'python' in the saved searches page.