Expertise is definitely too strong of a word, especially for where we are at right now... we need to refine our copy.

Our goal is to eventually build in some testing mechanisms but right now we are primarily focused on testing out our tagging accuracy. We will probably roll out some form of time-on-site metric soon that will modify the tag's relevancy score to determine how much credit you should actually earn. In addition we've played around with some word-relationship stuff and it actually wouldn't be that hard for us to roll out some form of auto-generated quizzes. Again, a lot of this is very new and we are open to any feedback...