Rapleaf, a company that provides people-focused search services to corporate clients, spends a lot of time mining social networking data. It has just released a survey studying the social networking habits of the 49.3 million people it has information about, divided by age. Sample sites include MySpace, Facebook, LinkedIn and Flickr.

Here’s some of the findings, lifted directly from the survey:

– 120 million social network profiles (total) were found, with each person averaging 2-3 social networks

– Women and the 14-24 year old demographic are more likely to use Myspace and Facebook than other demographics (the 14-24 year old demographic represents 65.5% and 66.25% of total users respectively)

– Men and the 25-34 year old demographic are more likely to use LinkedIn and Flickr than other demographics (the 25-34 year old demographic represents 51.0% and 38.1% of total users respectively)

Of particular interest to VentureBeat readers, who our own surveys show tend to be male and at least in their 20’s.

Since older men tend to be more transactional and given the transactional nature of LinkedIn and Flickr, it can be seen from our study below that the average demographic for these social networks are older than Myspace, Facebook, and the majority of other social networks.

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