I have learnt and achieve so much from this forum and just want to share a few tricks for getting high pr blog comment links the whitehat way using scrapebox, a tool a lot of people consider a curse after its release.
This technique has defied all Google update whether Panda, Penguin or whatever.
Most important it doesn't require much but worth hundreds of dollars if you are to pay for it.
This method alone when used can place you on the first page of Google within 30days or less.
You will even notice quick SERP increase within a day or two of comment approval.
Below is how i use Scrapebox to my advantage:
1. Open up Scrapebox tool
2. Load three to five proxies and check to use proxies.
3. Add keyword related to your niche, you can be broad and the keyword must not be directly related to your site/niche.
4. Choose custom footprint on Scrapebox and harvest your keywords
5. Remove Duplicate URLs
6. Check URL Page rank and not domain page rank. I usually get rid of PR2 sites downwards.
7. Use the Blog Analyzer - Remove blogs not open for comments
8. Make use of the Addon Outbound Link Checker - Filter and save 40 OBL to SB.
9. Check for do follow thou its important to also post on a few no follows as well.
10. Save and start leaving great, relevant manual comments
I recommend picking at least 7 to 10 blog urls daily and leaving your comment on it.
I find it more effective using my url directly.
This method is a proven way to do less and get more with high quality back links the Google way.
You don't have to be scared of losing your ranking in future, getting sand boxed, facing Google dance e.t.c.
I hope this helps