I would definitely use it! I've been boosting my posts for a while now and it's great to get extra votes. I will say though that you should boost it but reasonably. If you spend 900 points and try to boost a post to 2.50$ they won't do it and refund the points. They manually look at each post or comment that is requested to boost so just boosting it isn't a guarantee you will get it upvoted. I've changed my habit now to just boost it a little bit. If you use 150 points it will boost it by 0.35$ roughly and a lot of times it goes through successfully.