What are tags?
A tag is a (relevant) keyword or term associated attached to a piece of
information (like a forum post, blog comment or download) and enables
keyword-based classification. For example, when I was writing a blog post on the Q-Pulse product roadmap, I entered the tags "Q-Pulse, Roadmap, Product Roadmap 2008, 2008, etc". It is good practice for users of the community to tag their posts. It helps make the post more searchable (by populating the tag clouds seen in the forums), and helps with users populate site searches.
Read more about Tags on Wikipedia
Creating Tags when Writing a Blog or Forum Post
When writing a blog or forum post, you will see a Tags field under the maintext area you have typed into, and above the post button.
Fill in keywords related to your post in here, seperated by commas or semi-colons.
Add or edit tags using the Edit Tags Menu
Navigate to one of your existing posts and select [Edit Tags] from the "Filed under:" sectionbelow your post.

This opens the Tag Editor:

This loads the current tag information for your post. You can then add tags or edit existing tags.
View Posts using Tags
To view blog or forum posts that use the tag you can click on the tag name on the popular tags cloud (seen below) on the main Forums page, or click on a tag in the "Filed Under:" section underneath an existing blog of forum post.
