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Oh no! What does that mean exactly? Am I not supposed to be upvoting as much as I am? Also thank you :)

Haha, he means he's going to want to upvote all your photos, I think.

Voting power goes down the more you vote and recharges at a fixed speed (20% a day I think?). Don't worry about it for a long time - your vote isn't worth anything when you start anyway, so you might as well go crazy and upvote anything you like - it may not carry monetary weight yet, but people will still see and appreciate the gesture.