Its a helpful boost when you are starting out. I got a lot of help from the minnowsupport bot when I started out. A few things to consider though:

1. The bot only upvotes you once every 48 hours. If you request an upvote before the cooldown timer ends you will not be able to request an upvote for that post again. So keep track of which posts you've requested an upvote for and when.

2. keep a careful watch on when the bot is active.. it used to run 24/7 but now it goes to sleep every couple hours to recharge.. don't request an upvote while its sleeping.