Y Combinator-backed AdGrok has raised $470,000 in angel funding from Chris Sacca, Russ Siegelman, Ben Narasin, TriplePoint Capital and Y Combinator.

Today, the startup, which launched in August 2010, is also announcing the general availability of AdGrok to users. AdGrok’s web-based platform allows small businesses purchase contextual keywords on Google AdWords, without the cost of a SEM agency’s work. The SaaS suggests keyword buys, carries them out, and then collects and displays stats about their performance. AdGrok essentially becomes a business’ interface to AdWords, replacing Google’s platform with a more user-friendly software.