Lets say i have made a video on 'How to save a bookmark', what tags shall i use for it and how many tags would be enough to take it to the top of youtube search. I have seen people using a lot of tags for their videos. Is it an advantage/disadvantage?
Tags can be your more traffic or views if the tags are get high search or index well on search engines. But must use wisely. Don't need to spamming, but use with related and helping visitors from your main videos.
Remember not to use cheat-tags (names of famous channels etc.). It's not good in long-term It's rather an advantage to use a lot of tags, if they are fitting the topic.