Have a way for a user (not the OP) to mark a question as "I am currently thinking about how to resolved it". Show the number of users working on the issue. Some kind of an involvement number.
This will indicate for OP and for others if the question is legit and whether it got other people's attention. If the number is low after some time, then it will tell the OP to rephrase the question or to add more details.
There is the "Viewed times" counter, which is mostly useless.
Also have a way for a user to clear this mark, which will be an equivalent of "I give up" or "I am no longer interested".