Here is a nice tool called “Personas Web built by MIT Lab”   This tool analyze the content snippets avilable on the internet and summarizes how you are seen online at a high-level. http://personas.media.mit.edu/personasWeb.html

Analysis in Process:

Final Summarized Report:

You can also find out what people think about you brand by just entering the brand name in the text box. I guess it doesn’t work if there is only one word…like hewlett packard works instead just hp.