Reading the spec for this extension that caused all the hoopla - basically it saves the programmer from requesting updates from the server. In other words,
it's a shortcut for code that could be written to spec with a bit more effort.
And yes Verox, Steam does explain more. I'm not about to pull the trigger to get to that documentation. You document what your page does so users know before they click.
If I had taken the attitude that minority does not matter I could have shaved 4 weeks off the time expended to design the ruck system for ACE in ArmA2 -- and broken all the support for missions
that allowed for purchase of items. A professional coder sweats the details, tests the product before release, documents extensively, and does not talk down to the user base about problems.
If this seems rude, I've been subjected to sudden threats of being banned for hitting the wrong key, told to re-authenticate for the 2nd or 3rd time now, tried the web page in good faith, discovered that
I need to switch browsers ( I use IE for compliance testing ), tried Chrome, dug around for several minutes before finding the aforemented button, then hitting a page that may or may not have granted access
to my steam account for what covert purposes it did not say. I'll state my view of the facts and then step off this soap box - your ego will survive somehow.