I've added BMI to my blog to the lower right corner. Although the chart will be automatically updated every five minutes, you don't have to fix your eyes on it. For one this is mainly for updating S & P 500. For two usually we are looking for a divergence spanning a couple of days.
As of today we see a positive divergence between BMI and S & P 500. So I expect S & P 500 to make new high soon, if BMI still works.