Sure !! It is my best. Now I have natives to practice with them and good friends with whom I can discuss a lot of things about languages. So grateful I am for italki and happy to be here :))

Correction: Have you benefited from this site? Yes I have learnt a lot.

Well I want to learn Kiswahili and this site seems to be mostly people who want to learn or improve their English language skills. There does seem to be a lot of people donating their resources to helping others, so I do think that you will find a lot of helpful people here. In addition, there are a lot of multi-lingual Arabic speakers who appear to be both active and helpful, so they should be of great assistance to you.

I understand your question as asking whether anyone else had benefited from using this site. However, if you altered your tone and sentence delivery, this exact same sentence could be used to express sarcasm about the site. You might have to listen to a native speaker delivering the same sentence both as a question or as sarcasm. I believe that Arabic has a question tone at the end when asking a question, but I am not aware if sarcasm is portrayed similarly in Arabic.