A roundup of news on digital tools:Live feeds in the Twitter timeline: Periscope is inching closer to being a great live news tool as Twitter now can let live feeds run in the app. It can be useful for journalists covering live and unfolding events. It will show up in the Twitter feed, but not in support apps such as Tweetdeck or Hootsuite.To use it, open Periscope. Write something about the broadcast before you begin, so followers can understand what’s going on.As a precaution, have someone with an open Twitter feed checking to make sure your orientation is correct. I have seen many folks using a landscape orientation, which, in Twitter land, isn’t necessary.And, if viewers want to add live comments or “heart” a broadcast, they still will have to open the Periscope app.New features on Playbuzz. I’ve written about Playbuzz, the easy quiz generator. If have not used it lately, check it out again. Playbuzz has added several new quiz and poll forms, including a swiper.The swiper is a Tinder-like function that allows viewers to vote a photo up or down. It’s already being used in awards season the red carpet. It’s ideal for a mobile audience that you can’t get with traditional photo galleries.Here’s how it’s used for a quick election poll.We’re waiting with bated breath for a bracket tool; please, Playbuzz?