They do advertise themselves a lot, don't they?

If you click off that button, Google sets a cookie in Firefox and won't show the "ad" again until the cookie is removed. So if you remove cookies often, then you get the see the ad over and over.

Users have come up with a variety of tricks to hide those panels, using features of their ad blocker or other methods. I myself just stopped noticing them, but if they really bug you, could you describe the problem ones in a little more detail?

Chrome>Settings> Advanced>Privacy and security>Content settings >Notifications

to block or allow notifications

would be a nice feature for Firefox.

Hmm, I don't think Google's ad to make it your home page is considered a notification. Usually Firefox will ask you first for permission for a site to display notifications.

If a particular site is bothering you, you can block that site now without waiting for the permission request using the Permissions panel of the Page Info dialog.

While you are on the problem site, either:

• right-click a blank area of the page and choose View Page Info > Permissions
• (menu bar) Tools menu > Page Info > Permissions
• click the padlock or "i" icon to the left of the site address, then the ">" icon, then More Information > Permissions

Scroll down to Receive Notifications, uncheck "Use default" and click Block.

You also can set Firefox to ignore notification requests for the entire session (until you exit out of Firefox). Open the Preferences page:

• Windows: "3-bar" menu button (or Tools menu) > Options
• Mac: "3-bar" menu button (or Firefox menu) > Preferences
• Linux: "3-bar" menu button (or Edit menu) > Preferences
• Any system: type or paste about:preferences into the address bar and press Enter/Return to load it

In the search box at the top of the page on the right side, type 'notif' and Firefox should filter to the "Permissions" section where you can check "Do not disturb".