What it does: whatever tags you write in the Tags field get "attached" to your thread (topic). It helps others find this topic when they look for it, and it will typically help your topic get more attention in general. I suggest using it.
If you're familiar with Twitter or Instagram #hashtags, this is very similar to that.
If you have any questions about it, please leave those questions in this topic and I'll do my best to answer them.
If you want to see more technical, geeky programming-related information about this modification, see this.
