Vote to force-accept an answer for someone else's question
The fact is that we can't trust new users to accept answers when their problem is solved.
Sometimes the OP even adds a comment saying "Thanks, that solved my problem!" but it never accepts the answer and also never comes back. This is really frustrating.
My suggestion is that users who own a silver tag-specific badge (that is being used on the question) should be allowed to cast a vote to Accept an answer. Pretty much the same way we do it to close/reopen a question.