i was requested by several members to write here what happened with me. so i'm writing in short.
My Dolphin Mobile mod was posted by someone for free at Expertzzz. I have worked for months on this mod. The mod remained there for almost two days and more than 120 people downloaded it.
I'm angry that i've lost money, or something like that. What hits me is that Boonex is not caring about Developers at Expertzzz. And secondly, after this issue, i started providing the version 1.1. of Dolphin Mobile see more for free. So many people downloaded, but not even one of them cared to write a comment on it. They got it for free, but they still don't feel like writing just a comment.

@ FleaTrax

I agree with you. People are not happy with prices. But developers never provide them for free because buyers at Expertzzz don't care about those who provide free mods. You can't even hope that 1 out of 50 users would send you a donation of even $10. They simply grab the mob and run away. Don't even care to write a comment.
So many people downloaded my mod, but no comment. I'm not going to say anything to them in case they tell me that they got it free because no hungry person would like rejecting food which he gets for free. (though this comparison is not completely true) .

Even i'm a supporter of free open source products, but the developers should atleast get enough support in form of donations to keep running the projects. Even they have families to feed. I'm not much at the moment being a high school student who still feeds on parents money, but what about others?