Hi @tomnelson Yes upvoting is good. there are limits, for minnows though. Normally you can only vote 100%. Each upvote drops your voting power (say about 2%). You can find what your upvote is worth at https://steemnow.com or more information at https://steemworld.org just put your own account name in to get the details. Busy does let minnows vote at less than 100% so you can give more votes, though the value is low anyway.
RE: Upvoting posts and comments doesn't cost anything! Why not do it more!