THE big advantage, in my view, to Sharescope is that you can grab a data history for x years (EoD, or - apparently the 'gold' version I'm on about here), and it's in a simple format you can do what you like with... easy to feed into lots of other programs. That you can grab funnymental data from it is a bonus (it'd be nice if you could export some of that stuff alongside price data). The problem with Bigcharts etc is that you are limited to the tools they provide - those of us who like to feed it all into a PC to find patterns or other setups will always need a source of cheap, reliable price data... Sharescope is really good for that.
And please don't tell me yahoo is free - (1) you have to bolt the darn stuff back together, or buy a downloader like 'hquotes' to collect and compile it, and (2) I've found so many errors in yahoo data it isn't funny - anyone using that for trading needn't use charts, there's no point looking at a chart if it isn't showing accurate info. There's no substitute for a decent data service!
Dave