How long did it take you to establish yourself and gain popularity on EF?
I'm not really sure what you mean by "establish yourself" or "gain popularity".
But I can tell you what my experience with EF has been like. I came here, and started doing whatever I wanted to do. I wrote reviews however much I felt like, participated on the forums however much I wanted to, etc. I enjoyed it then and I enjoy it now - but I don't worry about what other people think, or being popular. I'm just here to have a fun and engaging hobby. The rest isn't so important to me.
So I guess my answer to your question would be: I don't know. I don't know if I'm currently "established" or "popular", but I don't really care either.