has google changed Algorithm?

One of my sites moved from #10 to #71 in Google serp.

 

I have seen about a 30-50% drop in links to most my site but who said that figure was correct anyhow. If anything most sites have seen a slight boost in the serps across many niches in the last week!

 

I'm one of those who can say that my rankings are pretty stable. If anything, it's become higher ranked.

 

How can people rely on an income online when search results are dancing around?

 

Check your google webmasters area because i had several sites suddenly blocked by Google this week. And by blocked i mean totally removed from G index.
These were totally legit sites I had running since 2004 and 2007 and now they are all of a sudden blocked without a notice.

According to the webmaster tools area i should file in a reinclusion request.

How stupid is this really?

 

Google is changing algorithms frequently as black hat seo develops different methods of improving their search results. I think it is like virus and anti-virus.

 

No problems in Webmaster tools. In one 8 hour period the number of indexed pages changed to the following: 30300, 30000, 27500, 27000, 25300, 25000, 2800, 2750, 2700, 1950, 1780, 1760, 1320 but not in that order. It kept bouncing up and down.

 

yes this is common , google changes / alters it'as algortithm for good frequently

 

Yes, I've noticed there definitely are considerable fluctuations currently. Obviously the constantly updated and modified G algorithm has been undergoing drastic changes lately.

 

I don't think there are any one right person who know clearly know about google update
all are wasting time . don't post if you not know right answer.

 

You are lucky to survive the change.

 

Yes reply only if you have good response to enrich this post. its going to help all.

 

So? What are in fact these changes? More concrete pls?