Just wondering how they work, they can't possible be going by what google shows for backlinks. Do they search to see how many times the url shows up on pages or something?
They usually use other links base, like MSN or Y. And they don't work properly, don't waste Your time
Hmm some have been known to give good predictions. One especially is http://www.iwebtool.com/pagerank_prediction. They take information from servers like google toolbars server then average it and so on. I dont know exactly but i know its not just a random number generator.
Our you sure about that my future rank is: 01www.puppyhookup.com3 0 (Check) How can this be--i got tons of backlinks mostly from directorys.
Rank_1:1:0 Rank_1:1:3 Rank_1:1:3 Rank_1:1:3 Rank_1:1:3 Rank_1:1:4 Rank_1:1:3 Rank_1:1:2 Rank_1:1:2 Rank_1:1:2 Rank_1:1:2 Rank_1:1:2 Rank_1:1:2 Rank_1:1:2 Rank_1:1:3 This is the result found from that tool showing all the servers results of your Backlinks. In my view what i have seen is that they are 90% perfect tools. Thats My View
Results: Your current Google PageRank is 5. Based on our calculations, we predict your future PageRank after the next Google update will be 10. No kidding. Wouldn't that be nice (above are actual results from one of my pages).