Pros: 1. Extensive donor database. 2. Many necessary metrics for platforms. 3. Protection against unscrupulous webmasters. 4. Guarantee of link placement. Cons: 1. Price. I haven't been using the service for long, but so far I really like everything. A wide database of quality platforms, there are useful options like insurance and a placement guarantee. Probably, that's why the price is what it is.
