How exactly does "Google Dance" work?

Sorry if I sound stupid but im really worried since this morning.. i had few keywords on page 1 last night but this morning the main kw totally disappeared from serps..

example kws:

routers under 100
best routers under $100
best wireless routers under 100
routers under $100

all these keywords were on page 3 without any link building and after some pbn links they were all on page 1, however my main kw "routers under 100" totally disappeared from serps and other keywords are back to page 3.

So is this "The" google dance people talk about all the time or I just got penalized?

erase cache and test again,
test with site:yoursitename.com are you still indexed.

You put your left leg in, your left leg out. . . No wait...

Definitely sounds like the dance to me.

Which tools are you checking with ?

How old is your site ?

dewaz said:

erase cache and test again,
test with site:yoursitename.com are you still indexed.

Click to expand...

test again what? I am using serplab to track my kws.. and already refreshed kws number of times..
yes site is fully indexed and bringing traffic to other pages..

kickthat said:

You put your left leg in, your left leg out. . . No wait...

Definitely sounds like the dance to me.

Click to expand...

even I want to believe it's a dance but I think this kw had danced before getting stable on page 1 and it's been there for like 10 days.. do you think it starts dancing again?

MisterF said:

Which tools are you checking with ?

How old is your site ?

Click to expand...

serplab
5 months old..

Quite a few people I've seen commenting that their sites are dancing at the moment, all rumours suggest a big shake up by Google.

Until an official annoucement is made if they've rolled out some big changes, I'd suggest looking at your backlinks and seeing if there's any that look poor.
Keep an eye on ranking and see if things improve.

Did it stabilise before or after you built the PBN links?
If you have been link building towards it, then it is not surprising to see it jumping. I think you just need to give it a bit more time and see if it comes back.

If some of the links you built are low quality, or you were linking with exact match anchors then that might be a cause for some concern, but your best bet is still to not do anything rash, give it time and see what happens.
If a keyword disappears and doesn't come back for like a week, then that might be an issue. If it's just dropped overnight then you have not left it long enough to really be able to tell anything.

it was stable after pbn links indexed.. i guess ill just have to wait for a week..

I've been seeing changes since january 1st.

99% of the gurus and blogs say there's nothing happening, but most of them just copy and paste from google's official blog.

Normally Google announces the updates waaaay after they're done - The idea is to keep SEOs in the dark.