This one generates traffic. I use this on my 3 blogs. You will have a widget to put on your blog.

members of Entrecard will then apply to advertise on your blog, if you accept it, their avatar will be shown on your widgets. they pay thru EC credits. EC credits are used to advertise and sometimes they sell it i just dont know where.. the more people to advertise on your blog, that means the more credit. the more credit means the more chance on advertising to other websites and their widgets will bring traffic to you.

Not only that, there's a dropping system where you can drop on websites that have thse widgets, u earn one credit per drop. Usually on Entrecard, if you drop to their widget, they drop back to you. so that means, if became a regular dropper to their site, they most likely to be a regular dropper to your widget and a regular visitor as well. I hope these clear things out a bit,