Very famous digital product advertising network with probably the biggest base of affiliate programs right now (over 70,000).
Available in several languages and many regions.
Clickbank review and opinion
General impression, satisfaction
0.5Payment frequency and reliability
0.5Customer support
0.5User interface
0.5Advertisers - amount, quality
0.5Variety in partner programs and industries
0.5Amount of new programs per month
0.5Commission rates
0.5Registration process
0.5 They do not answer to queries & emails. Worst Service