I've been using Backlink Energizer for a couple years now and definitely haven't had any issues with it. It's real easy to set up, and basically it's just a good plugin to push out backlinks onto your own network. I use it on a different site from my money sites, but it works consistently and they update it about every 8 months to a year since it truly does run on its own.
It's a cheap purchase for something that keeps chugging along so you can work on getting more backlinks to feed it. I originally was using BIE (Backlink Index Express), but since that one only feed from Ezine Articles, the posts definitely looked spammy and Blogger and Wordpress were always shutting my sites down.
With BE, you choose your own feeds, they give you a fresh supply too, but the manual shows you how to find feeds that are in your own niche so you can keep your network looking original.
So it isn't good for indexing now,anymore?
What works now to index backlinks faster?
I have a friend who runs a part time link indexing service using just backlink energizer. He'd probably be the best one to ask.
To be honest, it's frustrating because the quality of the indexer also relies heavily on the quality of the link. If you're spamming scrapebox links with little to no content, you can probably see an increase of indexation of perhaps 3-5 percent out of 1000 total links.
If you're indexing articles or forum posts, your job is ten times easier. But then again, that sort of defeats the purpose of it in the first place. If your links are already getting indexed pretty well, having backlink energizer is a bit of a waste.
Just keep in mind, you need a powerful server to run it. At least a dedicated or a VPS would be nice. You will be running cron jobs on like 15-20 different web 2.0 clusters at a time. The data and bandwidth needed is quite high.