Smartsteem like Minnowbooster works by vote sellers setting a Vote Power level that they will not vote when they go under that amount. So all you can do is sit and keep refreshing the pages until the available bid goes up - then put your bid in and hope you grab available sellers before they get all used up. The nice thing about both is you don't loose money - they always refund if they can't supply. Getting the good content seen is a big problem, but you are by far and away doing a far better job of getting people to see quality content then any bot has or ever will.