How to remove annyoing ads?

1. Use free Malwarebytes Anti-Malware for Mac/ AdwareMedic to remove adware

http://www.adwaremedic.com/index.php

Download, install , open, and run it by clicking “Scan for Adware” button to remove adware.

Once done, quit Malwarebytes Anti-Malware.

or

Remove the adware manually by following the “HowTo” from Apple.

http://support.apple.com/en-us/HT203987

2. Disable Extensions and test.

Safari > Preferences > Extensions

Select and dissable all extensions and test.

Enable Extensions one by one and test.

To uninstall any extension, select it and click the “Uninstall” button.

3. Safari > Preferences > Search > Search Engine :

Select your preferred search engine.

First, never use any kind of "anti-virus" or "anti-malware" software on a Mac. That's how you cause problems, not how you solve them.

If Safari is not affected, you may have installed a malicious Chrome extension such as "Adblock Super" or "News Ticker Remover." Remove all extensions you don't know you need. If in doubt, remove all of them.