www.investing.com web site also have very good charting support and I use it a lot! All my charts in my analyses blogs are from there and they have over 30 different TA tools for using them on charts.

This gold chart is interesting for me in one other perspective. It shows how all world main currencies pegged on US dollar are in inflationary cycle and are not good store of value. Governments steel silently from our pockets inflating currencies and contract their debts on our backs.
I start to use a nice unit for expressing value in gold it is mtoG or milli troy ounce of gold this is 0.31103 gram of gold and is worth about $1.34 or €1.08 at the time of writing.