Comodo strumento per link semplici:

http://www.sharelinkgenerator.com/

IMMAGINI su twitter

http://stackoverflow.com/questions/6931396/how-do-i-add-an-image-to-a-tweet-or-how-does-twitter-decide-which-image-urls-to

Ufficiale Pinterest:

http://about.pinterest.com/it/goodies