Hi majorrobot,
Thanks for shedding light on the module issues.
I am actively ...

Hi majorrobot,
Thanks for shedding light on the module issues.
I am actively working on the issues pointed by you. Meanwhile i would like to know few differences between readability and my module.

1. To share on kindle i am using the javascript provided by amazon, so it directly send on amazon kindle account.
2. Javascript provided by the amazon has full flexibility on sending the specific content to kindle reader. i.e you can select the div which should be included by kindle js to be sent on kindle.
3. If you want to send only content then you can specify the div class for the content that should be sent on kindle reader.
4. If you are using custom username (i.e username with different markup), then you can specify the class of username in js and it will be picked up as author name of article.
5. Send to kindle js has better control on following content that should be sent to kindle reader like title, published date etc..

Apart from that i also have created panel widget, so you can embed kindle button on panels, that would be useful for distributions based on panels like panopoly, demo framework, lightning etc..