I use backlink energizer and it works great for me... however i want to point out that I have my own hosted WP sites as a network. I don't use cluster pack because they keep getting closed and index rate is much lower if you use them.

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any help??

I find backlinksindexer.com quite effective. If you check the URLs a week or two later near enough all of them are indexed. From my experience anyway. guess it also boils down to the quality of the pages you are trying to index.

You'd probably get better results using web 2.0 and article directory as backlinks with spinned articles because backlinks energizer duplicate your posts.

don't know actually. cause never used them.
I don't know why you guys are so much interested and tensed about indexing back links. i think spending time in indexing links are simply waste of time. make links at that time.