Wow. If this is how you write in your non-native language, you must be a virtuoso is your own!
What's your native language?
What's your native language?
The reason for mentioning being a non-native speaker presumably was to point out that their own experience with more "niche" job boards would be with sites which are in their native language, or which have more uptake among users of their native language, such that they can't give any specific recommendations to a native English speaker.