I was looking at for the XLK short entry.
Note the divergence marked on the daily chart with a red bar above the volatility plot in the top chart pane and a green bar above price. On the hourly chart, note that we gapped down through a volatility "level" and then bounced off of the second one (yellow lines). The levels defined by these volatility swings are not always actionable, but they are definitely levels to watch and add to the mix of information. This trade was based purely on the chart pattern and my read of the overall market conditions. I'll need to see some momentum develop soon to justify holding.
If interested, post or pm me with questions and/or comments.