How do you decide whether to upvote a product or not on Product Hunt?

Initially, I see whether the product is relevant to me. If it is, I'll give it a try. If I like it, I will comment and upvote. If it is not relevant, I will still check if they clearly state the product's USP. If it is clear, I'll upvote.

I like to watch demo videos and then look at screenshots.

I usually upvote a product on Product Hunt if it makes me go "Oh, that's clever!" or "Wow, how did they even think of that?"—kind of like finding hidden treasure in a sea of apps.

Me too Igor! I watch the videos first, then look at the images. If I'm still confused, I'll read the hunter launch copy for the details. I'll vote if I think it's a good product 🙌 the trouble is there are so many amazing products on product hunt!

Check the website, understand the idea and upvote if it looks useful to me, community and world out there.

I would say: relevance, video, screenshots - then head to actually try it out. I do often Upvote based on the first 3 though!