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A deeper dive into Technorati‘s annual State of the Blogosphere 2010 report shows that social media such as Facebook and Twitter have become indispensable to bloggers.

About 87 percent of bloggers use Facebook, while 78 percent use Twitter. They they do so to promote their blogs, bring interesting links to light, keep up with news and events, and understand what people are buzzing about.

Technorati released part one
of the report yesterday. Here are some nuggets from today’s installment:

Some 74 percent of respondents describe their blogging style as “sincere.” About 64 percent say it is conversational. Corporate bloggers, who account for 1 percent of all bloggers, describe their style most commonly as journalistic.

About 52 percent of professional bloggers write for a blog they do not own. Some 58 percent of these bloggers have had prospective clients read their blog and purchase products or services.

Some 47 percent of bloggers say it isn’t important to them to conceal their real identities on their blogs. Among those who are concerned about protecting their identity, 35 percent are concerned about having their family or friends harassed.

The most popular topics to blog about are technology and business (yay), at least among the part-time, corporate and self-employed bloggers. On the other hand, hobbyist bloggers, who make up 64 percent of the market, say they blog most commonly about personal musings and technology.

About 16 percent of bloggers say the economic downturn has changed the topics or themes they blog about. Among those who have altered their content, about 46 percent say they blog about the economy much more and 36 percent say they focus more on value.

About 13 percent of mom bloggers say they primarily write about parenting, and another 9 percent focus on family updates. About 75 percent of mom bloggers use Twitter. But more use Facebook, and 58 percent say that Facebook is a more effective traffic driver than it was a year ago. Mom bloggers embrace brands more, and are more likely to describe their tones as sincere, conversational and confessional than other bloggers.

Technorati hosts lots of blogs and provides a search engine for them; it also serves as a portal for all things about blogs. The data comes from a web-based survey that Technorati conducted with 7,200 respondents. Penn Schoen Berland conducted the Technorati survey on the web from Sept. 21 to Oct. 8. The margin of error is 1.2 percent.

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