AdBlocker for Gmail™ allows you to remove all annoying contents, ads, and banners from your Gmail inbox!
a) This addon is very lite with no significant memory and CPU usage.
b) It effectively removes all annoying Ads (including web-clip suggestions) from your Gmail inbox, both at the top-header and bottom-footer.
c) It also removes annoying Ads from the right side-bar of each individual email page.
Note: in order to report Bugs, please visit the addon's homepage (http://mybrowseraddon.com/clean-email.html) and fill the Bug report form.