Some very interesting comments:-
As far as I
am concerned for any programme, the decision on which network and how many has to be taken on merit - if you have a programme which is performing well on one network but you find significant affiliates (or numbers of affiliates) that say we would like this programme on xxx network, then you have to take this into account.
I always recommend a new merchant to launch with one network and review this after a short period to make sure that the costs of affiliate marketing do not become a barrier. After this review we will then decide on whether a second network is a good idea. Sometimes we get existing merchants who already have more than one network, or new merchants that very definitely want more than one network from launch, which has to then be taken into account as well.
I personally believe that 2 networks for any programme can be beneficial for a merchant as they have potential access to more affiliates, as affiliates have their favourite networks for various reasons, therefore by choosing only one network can sometimes have a negative effect on a programme,
Also the functions that some networks offer are not good enough for some merchants, if you have a retail merchant you need to make sure the network they have or choose are able to provide all the functions that are needed.
I have to say that comments about kick backs is very poor reason and any management agency that chooses a network on these grounds is doing a bad job for the industry, we are all aware that kick backs are available from networks, but if you want to be a good successful management agency why would you put a programme with a certain network that either cant or wont support the programme just for a very short-term gain. From what I have seen the amounts for kick backs is not something that should affect a decision. Not only do you want to have a good reputation for growing good clean programmes - the benefit of choosing the correct network(s) that can maximise affiliate revenues is of great benefit by any financial criteria, client / network or agency.
I
am in total agreement with other comments if you have more than one network you should always make sure that the each network offers a level playing field in terms of commission, tools and communication on each network.