Effective DIY PPC campaigns for very small business was never really cracked by anyone yet including Google itself. Small business with sub $500 monthly spend, simply can't afford the overhead of working with an agency. Yet most simply can't write a decent ad creative, come up with relevant keywords nor have the time and knowledge to monitor and optimize the Campaign. Agraba, while clearly in its early stage, seems to nicely automate both ad creative and keyword choice (for the currently supported verticals) and to optimize the campaign better than some low cost, high scale agencies. Definitely a startup worth watching!