That is the purpose of the personal tags. And if I don't want to see your posts for whatever reasons, I can ignore you or just ignore that specific tag. It works well everyone has complete control over what they see and don't see.
It all sounds really good this but still can't get my head around it. Say I start uploading my electronics tutorials under "electronics" then if someone else starts using that tag but they have a completely different idea for what they think the "electronics" tag should stand for, where do we go from there?
As I understand it there are no moderators.
Here at Hubski we typically approach problems as they arise rather than playing guessing games about what the future holds. Of course users are going to occasionally disagree what tags should be used, but abusing tags is never going to work out well. Further, since we all want the content to be organized and easy to find, I'm sure some consensus could be reached. Also, it's worth checking out personal tags if you are going to be consistently posting something that is yours. This allows you to build collections of your stuff with a tag that no one else can use.
No worries. I wasn't very clear. Let me know if you have any other questions. Welcome to Hubski!