Originally Posted by PAR

Correct by other sites I mean targeted blogs, micro blogs, etc..
Sites that will slowly build up over time that can be used to market/send traffic to the WL's, provide link backs to the WL's for a little SEO help.

A little added revenue can be generated by placing ads on the sites (sell the ads to any one of the ad networks on a CPM bases)

Depending on who the WL's are with you can also generate model bio pages/fan pages to add a little content to them. There are enough tools online that can spin the text a little.

Again depending on the company that gave you the WL you can use the "other sites" to collect user data and API the data to to the WL provider. Host and post style ads, or optin news letters etc can be used to collect usable data for use in API's...

There is also little stopping you from posting the data later to other offers.

Keep in mind Wl's should be setup on revshare and are a long tail project..