Lijit, the Blog Search Widget stated that they would launch a Ad Network back when they got $7M more of funding and they have now finally released it. it is a Publisher Ad Network and those using Lijit Widget may apply for it to earn some extra cash.
I like Lijit as an idea. but i do not seen it mature enough as it should be by now. it is a little slow and i had the opportunity to try it out using Opera 9.5, IE8 and Chrome in both XP and Vista. it feels even slower on those browsers. the best performance was obtained in Firefox 3 and IE7 in that order.
But that is not my biggest complain with it. while i like the Lightbox mode they use. i wish it could be like the one used by Custom Live Search or that it could be a Asynchronous Content loader like the one used by Google Ajax Search. At least i would like the option for it to load like that.
On the Ad Network. it is a good idea. they got enough users to make it work and anything that can benefit the product and the product users is a good thing that deserves to succeed.
Right now it will serve ads coming from Lijit ad network but it will allow the choice for publishers to choose advertisers later on.