Hey people, I own a site www.healthinsurancebluebook.com and have had a team of people doing SEO on it for over 8 months. Now we have made a rather dramatic progress and were ranking quite high for many high competitive keywords. We took the first page for some minor longtail keywords in health insurance nihce and were ranking in position 12 for keywords "health insurance plans" about December 5th or so. So after Dec 5th all our rankings have disappeared and have not rebounded yet to date. Usually we had tons of fluctuations in rankings before and it took at most one week for rankings to rebound. So could anyone analyze or explain whether this is a penalty or this is just sandbox? I am just lookibg for any educated opinions regarding this subject as frankly I am bit confused. Is there any way to actually tell the difference between penalty and sandbox? And esentially should I get worried or not?