Tagging individual words for SEO purposes isn't quite how it works!
Search engines analyse a page based on the contents of its main structural elements, such as <title> and the description metatag, along with contents of the primary heading tags. You'll need to take a close look at the underlying HTML code for a page to decide how best to improve search engine rankings. Have you seen the option at:
Options > Application > Change title and meta tags
Not directly relevant to your query but, depending on your userbase, may be useful to you are the facilities at:
Options > Application > Extras & Add-ons > Social
Here are some of my embedded applications:
http://www.seahawk17.plus.com/forum.htmhttp://www.rustonreaches.plus.com/blog.htmlhttp://npopuk.org.uk/3.02/forum.htmlhttp://www.threeriversrace.org.uk/index.php5?title=Forumhttp://www.gregafloat.plus.com/blog/index.htmlNone of these are what Nabble calls a blog, rather they are a combination of applications including "Mixed", "Forum", "Gallery", "News", etc. To get a feel for what is possible it is best to create a forum and then play with all the customisation possibilities.
Volunteer Helper - but recommending that users move off the platform!
Once the admin for GregHelp now deleted.