What do you think are the biggest differences between Facebook and Twitter?

Hi.

We all know that both Twitter and Facebook are the most popular social websites of all in the whole world. Everybody like them and for many years are standing at the top. I just want to spot a few good differences between them. One of the most obvious is certainly the length of a text writing. Twitter is limited to 140 characters but Facebook not. However, in both sites anyone can upload several pictures and videos, to link to other content and in general keep in contact with friends and/or customers in an effective and fun way.

Of course in Twitter nobody can creat, edit, rename and generaly organize contents in folders and subfolders. There is no such possibility and it looks more bulky than Facebook, which also supports a well-design timeline. What other differences can you see?

Thank you for reading that,
John