Ah, I think I get it now. They are saying that when running an affiliate site for them that uses a system like Google Adwords to attract visitors, one mustn't use AdLibris as a keyword. I suppose those systems work the way that the highest bidder for a specific keyword has their ad displayed at the top, thus the term "bidding". And the background is presumably that they don't want their affiliates to compete with them for these keyword ads.

Still, the grammar sucks mightily. And as a tech writer I think they score quite low on general comprehensibility.