Google is most widely used search engine and it is no surprise that for optimum search engine performance and increase the ease of users that use the search engine it keeps updating the algorithms from time to time.
These changes affect everything on internet including blogs and the content that is carried in them. People who belong to this industry must be well aware of the Google Panda and Penguin Updates.
Google has been updating Panda from quite some time on a monthly basis but as per the recent announcement by Matt Cutts it is been noted that there is hardly any further updates. Google Panda will remain more or less the same now on making it easy for SEO companies and forums to get better results and productivity out of it.