There's no harm in that at all, and you're correct. But keep in mind it's $5/mo/server at the lowest tier, so if you have multiple running simultaneously you'll

There's no harm in that at all, and you're correct. But keep in mind it's $5/mo/server at the lowest tier, so if you have multiple running simultaneously you'll get charged more. If you don't mind paying the $5, by all means leave it up 24/7. :)