Interesting link. Even more interesting that they display their formula, which looks kind of goofy.
One major problemo there with the site:
For only $44.95 per month, the information that moves the OTC:BB market is yours.
You can't even see the Index values for free!
They are basically selling you the OTCBB equivalent of Yahoo Naz/NYSE info. Which is understandable, considering that OTC information is hard as heck to get.
The datatracking is simple enough to just make it a daily routine of iHub and throw it in for free as another attraction. I don't want to get into all that other garbage they are doing.
Very interesting site, though.
My forumla is very simple, and what I think all others are based on:
Index Value = (current stock price x no of shares) + (same thing for other 10/100)
MB