Online advertising is definitely the fastest growing medium of advertising mainly because , the advertisers themselves are bound to communicate with each other in the form of articles, Products, comments, blogs , etc. One of the biggest disadvantages of online advertising would be the constant comparison to all other forms of media. online advertising overtakes every other medium , it would be inevitable to consider the internet as a marketing tool.
Are you advertising on keywords where you already have good organic search rankings?
Is the call to action clear and concise or is it misleading?
Should you be increasing or decreasing your budget?
Could you generate more traffic and customers if you started online advertising?
Should you be advertising on networks other than Google Adwords?
Are you generating leads via your online advertising or just doing branding?
Do you do flash advertising or textual advertising?