+1 symbol in your ad ! Why ?
is this only a part of ad or it relate to quality score ?
Connect +1s from your Google Plus page to your ad . is that increase your quality score ? suppose you have 1m Followers in G+..?
Re: +1 symbol in your ad ! Why ?
As per the official announcement which happened in October 2013, it was told that the Ad Rank will also take into account a new component and that is the expected impact from your ad extensions and formats in addition to Quality Score and CPC bid.
And if you really have 1million followers on Google plus, then you shouldn't really wait and connect with your social extensions ASAP.
Find more details here: https://support.google.com/adwords/answer/1722132?hl=en