The August 2009 Social Radar Top 50 measures the brands with the most active Web presence based on overall online conversation volume. To create the Top 50 list, we used Social Radar to analyze millions of blog posts, news feeds, forums, social networks and Twitter posts to aggregate a list of the words and brands mentioned most frequently on the Web during August 2009. The list measures the number of unique individuals or sources that posted content about each brand during August 2009 rather than the overall number of mentions, which would be more heavily influenced by big fans who post frequently about a specific brand.

Twitter holds its reign at number 1 yet again. Disney jumps 9 spots and Marvel joins the list as Disney’s acquisition of Marvel made huge news at the end of the month. Playstation launched 11 spots due to the introduction of the PS3 Slim with its long-awaited price drop. Xbox 360 also made news with the announcement of a price drop, sneaking it up 3 spots.

Also worth mentioning, the build-up of chatter momentum for the upcoming NFL season rose NFL 13 spots. Firefox and NASA both take a dive as natural fallout from their big announcements last month: NASA’s 40 year celebration of Apollo 11 and Firefox’s version 3.5 update.

View the full list below, or download the PDF. For additional information about how you can analyze chatter sentiment to gauge positivity/negativity, view key words mentioned about your brand and identify key influencers, visit www.infegy.com/socialradar.

Questions or comments? Twitter me @adamcoomes.