Annoying ads are all over the place in this internet arena.
Some may be useful and some not.
Think of ads as just one place to promote the advertisers products.
But the real content gets hidden in this sea of ad-blind web pages.
What you should do?
Ad-blocker for GmailTM
The best free adblock tool for Gmail.
This makes Gmail browsing very unobtrusive and can see your mails with less distraction.
Though the plugin is useful in blocking Gmail ads, its not updated since Mar, 2013.
Adblock for FacebookTM
Whats inside?
Its last updated this Mar, 2016.
Some users comment that its showing more of Suggested Posts in the side feed.
Also, some are not happy that its not blocking all ads.
These are latest reviews in Sept, 2016.
Adblock removes any ad videos shown before your video.
Features: Removes Pandora In-Page Ads Removes Pandora Audible Ads (not just mute them!)
Adds a quick access button to control the music and open Pandora.
Removes Pandora Video Ads!(NEW!)
Auto clicks on the Are You Still Listening button!
Conclusion
Though most of them are related to Adblock, each one has its own identity.
But if you want a morecustomized wayof blocking ads, you might use Adblock Plus.
This was also tested by me and it works as intended.
Adblock for Gmail is the one which I found most useful for small screen resolutions.