Which ping services I should add to my Wordpress-Blog

[MichaelJanik]

This post is deleted!

[DanDeceuster]

http://rpc.pingomatic.com/

This is the only one in all of my wordpress blogs and I've never needed anything else. I doubt you need so many. I wonder if all of them ping Google at once and that might even piss them off and ignore you. Not sure to be honest, but my blog posts are indexed within a minute or two.

[StalkerB]

Yeah, only ever used ping-o-matic as well but I don't think Google will get annoyed using multiple ones.

That said there doesn't really seem a need to use so many