It happens. I too forgot to upvote all the comments here. And when I turned up now, some of the early comments have passed the upvote period. Can't help!
Yeah, I had told Knircky about the issue next day and he said that there were some issues with steem-bounty bot and will automatically sorted out when it's up. And a few moments later, it was all good!
@dustsweeper seems to be a very interesting and useful service. I hope it will work with fractioned upvotes too. For me, I'm planning to boost up my voting a little to be over 10 cents this week onward. However I've subscribed to this new service as I don't see any harm in using it. Thanks again!