There's always silver linings in every dark clouds. I wonder if my next ebook (the manuscript submitted to ABNA) will get the same treatment.
Since it's already reached 1k+ downloads, I plan to ask the website to delete my ebook tomorrow. I think it's enough for the exposure. If you have ebook and want to make it free, but don't like the Amazon-exclusive thing, free-ebooks.net could be your choice.