Hi Mogga - that is Indeed a good question.
I guess I ought to have made this threads Agencies & Networks, since most will be relevant to both.
However, to help clear up how we fit into the picture, let me tell you a little about we (and indeed many other agencies) work.
We are a full service Agency at Brilliant which means we manage a whole host of Online & Offline media for our clients. This means that we're potentially coordinating our clients advertising on TV,Radio,Press,Outdoor,PPC & Affiliate channels, for instance. Clearly knowing and controlling what our clients are doing on other channels gives us more opportunity to develop synergy (i.e give our affiliates advance notice of major TV campaigns)- one of the things I'm striving to achieve.
As to how we fit in with Networks - sometimes we sit between the merchant and the Network, and sometimes we use our own platforms/tracking. An example of this is with Safestyle ( see our site
brilliantaffiliates.co.uk if you wish to see an example). It really just depends on what we think is best for our client & affiliates.
Thanks for the replies so far, and I'll continue to monitor & reply to this,
Matthew