Pinging

[krunk]

What does pinging do for your blog?

[rustybrick]

Pings send a request from one blog to an other, saying, hey - i just linked to you. So the blog that is being linked to then notes that info.

[matt]

well its possible to ping the edited post which is already published

[seofuture]

- ping is to alert or to inform other web sites that your blog are updated.
using RSS techniques you can inform this source that youhave new post at your blog and they can add it to their web sites.