Online networks are often the pendant of "real-life" networks. Most traditional networks offer some level of online services, some more efficient than others.

However, there are now some true online networks. Those are networks that have their main core of activities online and occasionally organize real-life events. One good example of this is the Savor the Success, a business network for women entrepreneurs. WhizVentures is also such a network for new entrepreneurs of both genders. As the site matures and new entrepreneurs get business experience, this network will evolve into an increasingly rich network.

Blogging is another way of building online communities and do informal networking. Blogs are articles of interest posted as stand-alone blogs or on specialized blogging sites. It is also possible to link your stand-alone blog to some of those sites. Blogs allow people to leave comments on each specific posting.

The interest for blogging has grown tremendously over the past few years. It was a marginal phenomenon at best when it started, but it is now a recognized corporate tool for PR purposes.