Xapads is saing on their main page that they have the biggest contextual advertising network with huge number of campaigns running for the publishers. There is several campaign models such is CPC (Cost Per Click), CPM (Cost Per Metric) and CPA (Cost Per Action) based, ensuring something for every publisher.
Only Relevant text and banner ads will be published/displayed on your website which guarantees the highest CTR (Click Through Rate) all that gets for you the maximum revenue and satisfaction.
The payout rates are one of the best in the industry (from $0.50 per 1000 impressions).
Xapads is supporting several ways of payment methods including Paypal.