EileensNotes also follows this trend, so you can easily categorize your question when posting a new question. (Fig. 1)
Keyword(s) will be automatically hyperlinked, so using a meaningful or proper name for keyword will expose your question to other users much more easily. After posting your own question with keywords, the posted question will just look like the question in Fig. 2. In this question, the author used three keywords to categorize this. math, middle school, 7th grade math
As I mentioned above, all of these keywords are hyperlinked. What this means is that clicking on each category keyword gives you a list of all questions having the same keyword in categories.
In main "All Questions" and "All Advertisements" pages, EileensNotes gives you top 20 keywords that are currently used. This is also called tags cloud in other web sites, and this will let you easily navigate Q&As and advertisements by category. (Fig. 3)
EileensNotes is an online Q&A site, started out of the bedroom of my daughter. It is now for all students and learners. Post/Share/Bookmark Q&As, and post your ADs.