Facebook has released a new Facebook Profile. As usual, the changes seem pretty arbitrary, but Facebook appears to have moved in the direction of having a profile page that blends your professional life and your personal life, and I feel pretty strongly that this is a mistake. My Facebook profile is my personal account. MORE >>

Contacts startup Rapportive has been acquired by LinkedIn, according to a  post on Rapportive’s blog  Wednesday. That includes social connections such as LinkedIn, Facebook and Twitter, as well as their address books. The official announcement comes a few weeks after rumors of such a buy were first reported by AllThingsD. MORE >>

The Media Buyer Planner reported that the study found that Twitter, blogs, LinkedIn and Facebook - in that order - are the top four social media tools used by marketers. Here is another study on the growing use of social media in marketing. See below for links to other studies. It is nice to see blogs up there. MORE >>

As Meryl wrote a few days ago, LinkedIn and Facebook are excellent business networking tools. Luckily, Facebook has just added a way of seeing who you’ve invited to connect, while LinkedIn has had a similar function for some time. Facebook: Friend Request Pending. LinkedIn: Sent Invitations. MORE >>

The IPO of professional social network LinkedIn is probably the most significant web stock issue since Google, so I wanted to take a moment to reflect on LinkedIn’s impact on the world of work. Like other social networking apps, LinkedIn enables its users to build a profile and connect with other users. Digital Resume. MORE >>