Not sure what you mean. You can use Bluetooth audio in Internet explorer. You don't need Flash for IE (flash is built in to IE to prevent security and performance issues that come native with flash)
Not sure what you meant about the cookies/history maybe you can expand on that in a discussion since it is unrelated to this topic.
I can pickup a Skype or Lync call with Bluetooth. However I wouldn't use a browser app for Skype on Windows 8.1 since the Skype metro app is way more handy and the desktop app is better for certain things.
Not sure what you meant when you said maybe you can expand on that.
"Therefore, only the oryginal R drivers BT and WiFi in the device manager is important.
The application installer or windows update is too stupid for that"