Can a domain recover from a penalty over time?

I wrote a post last year saying that aaronchua.com is no more because it seems to be under a penalty. I drew this conclusion based on (i) it has lost its sitelinks and (ii) it has lost rankings for many of its keywords.  After a year of non activity, I was surprised that this penalty seems to be lifted by itself. If you do a search for aaronchua.com, you can see that it has regained back its sitelinks. Click the image for a bigger view Hence, I decided to continue blogging here again. No point wasting an aged domain that has real content on it in case I need to channel its PR to a new site. More importantly, I have learned quite a...

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