1. Unethical is a matter of opinion. Would you rather I didn't release it, and you didn't know that such a thing was possible? I released it so everyone would know that it is possible.
2. There are valid, ethical uses for this extension. Intranet site support comes to mind.
3. I suggest in the description that this shouldn't be run on public sites.
4. You CAN determine if it's installed on a site (you cannot, however, know if it's enabled and running). Re-read the description.
Thank you for at least acknowledging that it works as described. I suppose the rest of your comment is just you lashing out at me for having opened your eyes. Would you rather have remained naive?
Can't choose the width, or the size of the thumbnails. Only the height of the display.
If you use flikr religiously, then this component works great. Otherwise, I would hope that the final version has more functionality.