Consider that we have the following topics:
- Page Rank (Google's trademarked rank indicator)
- Alexa Ranking
- Over-all ranking (in general, not specific to any service or SE)
This would mean three very similar tags:
[google-page-rank], [alexa-rank], [site-ranking]
And I'm sure that people would naturally use all three, almost all of the time when asking any question that has to do with ranking.
Should we have tags for each type of rank, or just one meta 'ranking' tag?