What do you use on the internet to trade, advertise and publish content?

In today's society the internet is bombarded with advertisements. Some safe and others not-so-safe. Did you know that there are networks online where advertisers and publishers can exchange trades specifically for solo ads. However, Udimi is on one-of-a-kind. Udimi is a "free to join" online network that allows you to trade, advertise, and publish solo ads.

Many of you may be asking, "What is a solo ad?". A "solo ad" is a single (or one) mail-blast that goes out to a list of people.

Solo ad services seems to be a very essential tool used to grow online businesses and Udimi is that handy platform where you can find solo ad sellers.

Here is how Udimi works:

"A publisher (Solo Seller) has a list of email addresses which is confidential to themselves. You as an advertiser write a sales letter in email format (email swipe), with a link to your webpage, or whatever page you want the recipients to visit. And a solo seller sends your email swipe out on your behalf for a fee."

You can check-out Udimi by clicking here.
What are some other great networks where advertisers and publishers can exchange trades specifically for solo ads?