It is a great place for asking questions.
OR
It is a great place to ask questions.
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Sign up to join this communityIt is a great place for asking questions.
OR
It is a great place to ask questions.
Either is correct. There is a hair-splitting distinction if we think of the phrase following place as a modifier:
So a great university is a great place for asking questions, but my local pub is a great place to ask questions.