I've been using Hashbase for a while and it's been really solid. It's a public peer that rehosts your Dat archives, so they stay online even when your computer is off. What I like is that they also keep a backup of the entire change history, and they mirror your content on the web via HTTPS, making it easy to share with anyone. You can even get a custom shortname like yourname.hashbase.io. If you're interested, the site is at https://hashbase.io/ they explain the features well and have a few example apps too. I've found it really useful for keeping my datasets and projects accessible without worrying about uptime. Definitely worth a look if you're using Dat.