Working with solo ad vendors is, like most other strategies you can employ with internet marketing, an investment that may or may nor work for you, or may work one week for you and not another and might work with one vendor but not another. There all sorts of factors, from the quality of the list, the experience of the vendor, the appeal of the offer and whether or not your offer has already been beaten to death by other marketers.
As stated, there’s no way of predicting the outcome with any certainty with your choice of solo ad vendors and, if you are on a limited budget, it’s easy to give up and make generalizations about the whole venture. It goes without saying the more money you’re willing to invest and your willingness to take risks is a major factor in your opinion about solo ads.
If you’re just starting out, I’d recommend using solo ads to build a list rather than promote a particular product. You don’t have to worry about the success of a one-time opportunity and, for better or for worse, you can promote to your heart’s content. to those who remain an opt-in.
I believe using solo ad vendors to build a list is a better option for getting started. If you find it has some value, you can expand your comfort zone as time goes on.
The most well-known sites for solo ad vendors include Udimi and Clickonomy. You can also check out providers on Facebook with the Solo Ad Testimonial Group. The Warrior Forum Marketplace is also a good resource. Again, this can be a trial and error process and you need to be willing to take a few risks before you can make a sweeping judgment about the efficacy of a solo ads strategy.