By popular request - when you now close the toolbar on mindat.org it won't re-open on subsequent pages unless you tell it to! Sorry - I did mean to do this a LONG time ago, but never got around to it for various reasons.
It might be helpful to add, for those who are wondering, that the "Show toolbar" button can be found in the lower right corner of the screen. Sometimes is appears when you navigate from one page to another, but even if it doesn't, it can be found by scrolling any page all way down. The button is also very polite and appreciative of being used... ;-)