What format do indexer services for the Rapid Indexer need to be in?

The Rapid Indexer list that is loaded into the "Load Indexer Services" option should be formatted like this:

http://www.whoisya.com/{website}
http://www.domain.com/{website}

If you need a list to get you started you can go to the addons menu at the top of scrapebox, then click "Show available addons".  Then click on the rapid indexer addon.

Then in the description below you will see a spot that says:

Click HERE to download a small list of indexing sources to get you started.

You can download that list and you can also try searching google:

https://www.google.com/#sclient=psy-ab&hl=en&safe=off&source=hp&q=free+scrapebox+rapid+indexer+list