welcome armando . I'm agree with you but I can't find partner to learning more from what I need 

Honestly, you just signed up on Italki some weeks ago. I think that's a good site for learning, after all. What did you expect? Maybe random people coming like an herd on your profile?

welcome Karl Franz .yes I have a problem with communication.

I think yes it is beneficial to some more than others I guess.  It depends on a lot of factors.  Why do you ask this, do you feel left out somehow, or not appreciated ?  Having difficulties in finding an English native speaker perhaps, or is it just a rhetorical question ?