Google voice is a service provided by google which gives you a single number for all your phones. All calls will be forwarded to google voice number. User can also record voice mail if phone is unavailable.
Whenever you publish a new blog post blogger creates an url for your blog post. Normally this url will be created from post title. But now you can customize your blogger blog post url using Permalink option.
It is difficult for online user to remember every. Most of the readers prefer receiving updates to their mail box instead of visiting website frequently. That’s why add email subscription to your blog or website to deliver your feeds to readers.
You can not only publish content but also send it to users via email. The new method of publishing online content is called web feed and the technical term is RSS Feed(Really Simple Syndication or Rich Site Summary).