Currently the languages added in your profile are represented as 3 letter abbreviations (e.g. "CES") with a translated full name on hover (e.g. "Čeština").
But it might be not that obvious for everyone which language e.g. "CES" and "Čeština" stands for.
Please add a full english name on hover - e.g. "Czech (Čeština)" - and/or a flag in the Languages sections.