First, use Firefox, not Google Chrome, for obvious reasons.
Go here to install Adblock Plus for Firefox. Ignore the subscription window, we will do that later.
Then visit this page for a list of subscriptions. I recommend either Fanboy's list or Adversity.
If you use Adversity then add the list called "Antisocial" at the end of that page.
If you use Fanboy's list then add its tracking list and Annoyances list.
There are more lists from Fanboy here for extra filtering.
Note that you should only use lists from one author (Antisocial goes with Adversity, Fanboy's Annoyances goes with Fanboy's list)
Dev, a thousand thanks for responding.
I use Firefox and have ABP. After a lot of fumbling around on the web, looking all over the place., I found a tweak that when entered into ABP as a hide element - DELETES this damned blue bar and it`s stupid sharing matter. It works fine and the blue bar is now GONE !! You simply click Preferences on ABP, then Add Filter (copy/paste) and enter, then click Apply and OK. Don`t forget to enable all the hide elements. To summarise these elements are :-
##DIV#gbprw <========= This is the one that worked for me using Firefox.
My screen shot of the ABP hide elements is below. The one with the red dot is that which deletes the blue scourge, but it does no harm to enter the others since some systems work with one of the other options.
Whew ! Problem solved until those jerks at Google come up with another PITA.
Screen shot of ABP hide elements that kill the blue sharing bar :-