What do you think about Google's new updates and its impact on SEO?

[xpl0iter]

There were a few changes in google in march. I have listed some of them here!

• Started to index profile pages from more than 200 social networking sites.
• Turned off a classifier related to anchor text (the visible text appearing in links).
• Changes in the interpretation and use of anchor texts.
• Started to index the symbols. Usually google never takes the punctuation symbols into account in search queries. Now this update enables google to auto complete the serahc queries with symbols.
• Sitelinks data refresh.

So what do you think about these updates and its effects on your seo work?
Ref:

1. http://searchengineland.com/googles...-image-search-navigational-search-more-117285
2. http://insidesearch.blogspot.in/2012/04/search-quality-highlights-50-changes.html