I have just noticed that CJ now offers a deep linking browser plugin. This gives them functionality similar to Amazon. It allows you to create an affiliate link to a product page for programs in which you participate without opening your CJ account.
Deep linking directly to a product page is more effective than just dumping your visitor on the merchant's home page and hoping that they search for the product from there. In the past it was possible to build deep links through the CJ UI if the advertiser allowed it, but you needed to go to the advertiser's site and copy the page URL then go to the account page in the CJ interface and paste the URL there to get the affiliate code.
Many of the major affiliate networks have provision for deep linking, but this will make it faster and easier to do. I have not tried it out, yet, but I hope that it works with all of their advertisers.