I have made a detailed "tutorial" video that is now on the website to explain a step by step process on how to tackle this very large list of Pligg sites I will supply you. It makes things a little easier.
I see the tutorial, but still even with this mehtod it is going to take a while. You have to go through each one, then you have to select the ones that didnt work, delete them, then redo it. So with a list of a couple thousand sites you have a lot of clicking to do since there is no way to mass select the websites that couldnt produce an account.
Then, for pligg sites, you have to go into each one and find a category that it has. So that takes time too. When dealing with the amount of them, it is going to take a while to set up for sure.
What I had hoped was that you could highlight the sites and then just press a button to sleect them all. Otherwise as your list grows, you have to go through and deselect / select the ones you do not want to create an account for. It's all tedious, which is where the time comes in.