Things are looking a little to optimistic now though, the pointer on the site is at the excessive optimism level.
I use the OEX P/C at Sentimentrader.com. Jason also tracks (and I closely follow) the OEX P/C MAs, OI and an OEX P/C to Equity P/C ratio. All are incredible market tells.
FWIW they are all in the clear for now and are actually mildly bullish IMO. Typically there are several days warning. If anyone here is trading enough money where they can afford $200 for an entire year (best value for market analysis tools bar NONE). This is from someone who has tried plenty of things through the years and cancelled most. I consider Sentimentrader indispensable and at $200 a month I feel I'm ripping Jason off. I hope he doesn't read this post--LOL--as O don't want rates to go up.