48% of these consumers responded to a retailer’s offer posted on Facebook or Twitter. Twitter is about in the middle (55% of users age 35 or older) while 65% of Facebook users are over 35 (didn’t this start with college students?) Slashdot is almost 90% guys); LinkedIn is close to a 50-50 split; Twitter and Facebook are both about 40% male / 60% female; and women account for almost 90% of Pinterest users. 83% use Facebook and 53% are on Twitter, though that gap is expected to narrow by 2014 due to rapid growth in Twitter use. Twitter Facts. But 3.1 MORE >>

The average midsize or large company (1000 employees or more) has 178 “social media assets” (Twitter handles, employee blogs, etc.)–yet Although Facebook is the most important social media lead generation tool for b2c marketers (with 77% saying they had had acquired a customer through Facebook, compared to 60% for a company blog), among B2B companies, LinkedIn was the most effective, with 65% having acquired a customer through the professional network, followed by company blogs (60%), Facebook (43%), and Twitter (40%). Twitter is second at 3.6%. Twitter. MORE >>

According to a HubSpot study, 71% of marketers viewed Twitter as a useful marketing tool last year, up from just 39% in 2009. Facebook added more than 200 million users last year, and Twitter more than doubled in size, adding 115 million. Dan Neely discusses which social networking sites get the most attention from marketers (Facebook, Twitter, LinkedIn, no surprises there), how marketers can best use social media for branding and business development, and concerns about the use of social media in brand planning. Adoption soared. 85% of Inc. Mistakes were made. Magazine. MORE >>

I’ve used this tool on behalf of small clients for finding hundreds of key influencers on Twitter, blogs and various other social networking sites and forums. It may not catch everything, but it finds a lot (via blogs, Twitter, social news sites and Facebook public pages) and presents the information through useful charts and graphs. Until fairly recently, keeping track of your organization’s online presence was relatively easy. Other than your company’s website, most mentions were likely in well-known online news sites or trade industry publication sites. Vocus. MORE >>

In this example, a press release is distributed online, posted to the company’s Facebook and Twitter updates, and used to create a social media release (using a tool such as PitchEngine ). Any significant online news site pickups of the release are posted to Twitter (it’s okay to repeat news a few times on Twitter as not all of your followers will see all of your tweets, just don’t overdo this) and to social bookmarking sites. The social media release also links back to the company’s LinkedIn and Twitter accounts. Social media and PR would seem to be natural allies. MORE >>