How do I get rid of this big blue bar at the top of Google:
It is really annoying!
I am running Google Chrome on a Mac.
Note: I've only tested this on Windows but I'm assuming it should be the same on the Mac.
It's possible to do this with AdBlock Plus. Get it by going to http://adblockplus.org/en/ and clicking the big green button. Be sure to click the little Continue button that appears at the bottom to confirm that you want to install it.
Once installed there should be a red stop icon in the address bar. Right-click the icon and choose Options, then go to the tab called Add your own filters. Enter the following:
This tells AdBlock to remove the element with an ID of 'mgmhppd' (the blue bar). Click Add filter to confirm.
If you find AdBlock interferes with any other sites you can disable it for that site by left-clicking the icon and unticking Enable for this site.