If you have a Pinterest account and an iPhone, you might as well install the Pinterest App from the iTunes App store. Like most social networking apps, it is free and can be downloaded here
First click the profile tab in the bottom right corner of the screen.
Then click your account settings.
Then click Install Bookmarklet
End up here:
Bookmark that page in your iphone.
Then when you find a picture you want to Pin. Here is a picture of Ollie the Twitterrific bird.
Then just go to your bookmarks
Press the Pin It button and choose which image on the page you’d like to pin as you usually do and the rest is pretty straight forward if you are familiar with the desktop version.
Choose the picture you like, in this example there is only one image to choose from. Once selected, the Pinterest App will take over.
You are now in the Pinterest App (keep this in mind, if you get out of it mid-submission, just go back to the Pinterest app and this should all still be there). Now type in some useful text (so other users might find it in search results) and choose which board you’d like to post it to. Here it is being posted to a Favourite Toys board. You may also choose to share to Facebook or Twitter. You may choose to include hashtags if posting to Twitter. Then at the end press the Pin It button.
Now you are done!