Systems and methods are provided for aiding participants in meaningfully contributing to event online Q&A with minimal loss of attention to the event. As a user is inputting an event contribution fragment, probable event contribution completions are predicted. Based on the predicted event contribution completions, semantically-similar, prior-received event contributions are presented to the user. The user is permitted to act upon the similar contributions in lieu of completing and/or publishing his or her own contribution. For instance, the user may be provided the ability to vote on, comment on, or amend the semantically-similar, prior-received event contribution in lieu of completing and/or publishing his or her own contribution. Upon receiving an indication of a desired user action with respect to a semantically-similar, prior-received event contribution, the user-input event contribution fragment is discarded and the user's action on the prior-received event contribution is published in lieu thereof.
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