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