[pavel_lishin]

> Now, just putting your e-mail and letting the black hole eat them without an answer is very disappointing to those who took their time to read the license/about/readme, find your e-mail, put their hope that you're able to help them in some problem, and then... nothing.

He is not obligated to answer every email he receives.

He is certainly not obligated to play first-tier tech support for anyone who happens to purchase a product that uses curl.