You old tymers may have noticed that when starting a new topic the "topic description" line no longer exists, replaced with "topic tags" this is not the same, its been adopted from popular blogging software to aide in searching. Topic tags are simple one or two word descriptions of the content you are adding, not a line paragraph or sentence to describe the topic anymore. The tags all get shown together or can be searched to create a list of similar topics pertaing to that tag.
Some of you have already adopted this approach some are still adding sentences as a topic description to the topic. I would still like to make topic tags open, but as an admin I can just post up a list of tags for you to choose from and well I am not that creative so the tags would be limited to my feeble list of tags. So please I hope I have explained what tags are - and on the homepage you will see a new block, and on the forum index page there is also a block with popular tags - click on the tag that interest you and see a list of topics tagged that way.
for example I tagged this topic with "topics" "tags" "description" and "search" you can add up to 10 tags to a topic, and you can go back and edit them if you want to later on the topics you created.