1245 just gave you an example of how it can be relatively meaningless. It can be someone buying protection for an event that simply never happens, it can be someone replicating an opposite position via synthetics (-S + C = P), heck without which side was the aggressor it's even more meaningless (and I doubt any existing retail stuff tracking this is also tracking all the bid/asks in realtime).
Seriously, did you even read what I wrote?
-- To impute anything from flows in volatility, you'd look at order flow and transactions in terms of vega (or root-time vega, which is even better). Synthetics or any delta trades will not factor into such an analysis.
-- Trust me, when SocGen issues a single name autocallable and has to sell 150k of 25-delta vega in 1 year, you will clearly know which way they are axed. You don't need special software for that - there will be a dent in the vol surface the size of Kim Kardashians butt.
-- Unless you are looking at something very liquid like AAPL, flow effect on the vol surface is very real. The real question is what do you do with that information. If you play mean-reversion, you might be drinking from a fire hose (i.e. the flow is not over yet). If you assume it's a trend, well, you better be right. Vega is a tricky market to play, as it's all understanding of players and what they want.
-- Most real size in single names does not trade electronically anyway, it's IBD desks making size markets and then printing them on the exchange. So what you get is slightly delayed changes in the vol surface, but these changes are usually very real and persist for a while.