Online reputation company Rapleaf delivered some interesting statistics about the most prominent OpenSocial companies, along with Facebook. Rapleaf gathered data on users of MySpace, LinkedIn, Friendster, Plaxo, and Hi5– five social networks on the OpenSocial platform – and also gathered data on Facebook users.

The guys at Read/WriteWeb took some time and gathered the highlights:

• The greatest overlap between OpenSocial container sites exists between Myspace and Hi5, in which 43% of Hi5 users also use Myspace.
• Facebook users are 63% female and 36% male whereas the sites integrated with the OpenSocial platform are 61% female and 38% male.
• 52% of Facebook users are 18-25, whereas 40% of the users are 18-25 for the five container sites on the OpenSocial platform.
• Facebook users tend to use 2.9 major social networking sites on average whereas users of OpenSocial container sites tend to use 2.7 major social networking sites.

Here are the full details:
Facebook Users

• 2.6 million users identifed in Rapleaf
• 63% female, 36% male
• 17% <18>45 yrs
• 2.9 major social networking sites used on average
• 62% are on Myspace, 5% are on LinkedIn, 9% are on Friendster, 10% are on Plaxo, 22% are on Hi5

Myspace Users

• 11.3 million users identifed in Rapleaf
• 63% female, 36% male
• 20% <18>45 yrs
• 2.4 major social networking sites used on average
• 15% are on Facebook, 2% are on LinkedIn, 9% are on Friendster, 6% are on Plaxo, 17% are on Hi5

LinkedIn Users

• 0.8 million users identifed in Rapleaf
• 38% female, 61% male
• 2% <18>45 yrs
• 3.2 major social networking sites used on average
• 16% are on Facebook, 25% are on Myspace, 12% are on Friendster, 16% are on Plaxo, 8% are on Hi5

Friendster Users

• 2.3 million users identifed in Rapleaf
• 58% female, 41% male
• 12% <18>45 yrs
• 3.0 major social networking sites used on average
• 10% are on Facebook, 44% are on Myspace, 5% are on LinkedIn, 5% are on Plaxo, 26% are on Hi5

Plaxo Users

• 1.3 million users identifed in Rapleaf
• 62% female, 37% male
• 16% <18>45 yrs
• 3.6 major social networking sites used on average
• 20% are on Facebook, 53% are on Myspace, 11% are on LinkedIn, 9% are on Friendster, 15% are on Hi5

Hi5 Users

• 4.5 million users identifed in Rapleaf
• 60% female, 39% male
• 21% <18>45 yrs
• 2.8 major social networking sites used on average
• 13% are on Facebook, 43% are on Myspace, 2% are on LinkedIn, 13% are on Friendster, 2% are on Plaxo

I will take some time soon and will make a quick graphical comparison to let you feel the differences visually.