Piyyem is a great application to get answer for your questions. On piyyem, you can group your friends according to their abilities, and ask your question to appropriate group(s). If you have a question and some of your friends are qualified to answer that question, then group these friends and ask the question to that group. When you asked the question then all of your friends in the group are notified, and you will get an answer one of these friends.
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