i am heard tht news plz any one share the details

I also don't know in detail about Google +1 button. Can any body tell me what is the purpose of this?

It's like a FB Like button but for websites. I think the webmaster have to install a JS snippet in order to get it working.

Ya you are right...but I wanna know does it affect on SERP?

It's only just been released, so you might just have to try and see.

I've heard rumours it may help, but to be honest I hope it doesn't because it will just create a black market for gmail accounts.

i have heard about google +1 button and it same as facebook like button.

it resembles facebook a lot

It’s a one-way to get popular.

Google +1 is another service of google by which users can share their favorites to the world by their google profile