As for the accuracy of the site:
The site uses an index dated from 2000!
What site are you referring to, lawschoolstats.com? That's not accurate, it uses the most current indexes published on LSAC.org, and only uses older ones if the school is no longer publishing theirs.
You may right in a sense because there would be no need to distinguish (v.i., in bold) if they didn't use a more recent index. The only problem is that the site doesn't do a very good job in telling from what year does the index's data compute.
This is from the calculation page listed below. There, you will see this at the bottom of the page:
NOTES:* No index formula available for 2005-06, formula used is from 2000.
ß No index formula available, index was estimated based on top 6 schools.
◊ No index formula available, index was estimated based on top 25 schools.
φ No index formula available, index was estimated based on median of all schools.
Here are the pages:
The The calculation page:http://www.lawschoolstats.com/cgi-bin/cgi/index2.cgi
Information on the Index: http://www.uiowa.edu/~030116/prelaw/adminstart.htm
Comments on the indices used:http://www.uiowa.edu/~030116/prelaw/indexcomments.htm
The only sure cutoff point that it has is 2000. It goes onto great detail about the differences between the pre-2000 LSAT scores and their effects on the index. But there's nothing on scores and indexes after 2000.
Even the places with the most accurate information (for example, LSAC's online and printed guides) use data from the 2003-2004 application/admissions cycle. The site may be using data from the same cycle, but it is hard to discern. (I've looked everywhere on the site, and I can't find anything there that would disprove what I have said).