Filters
Lets say that you want to create filter which will recognize your friends' emails and move them to label Friends. Unfortunately we can't type them all in From: field. We can do it another way - if your friends put their email addresses in signatures just type in the field Has the words: address1 OR address2 etc. It's not the best way to achieve this and I hope in the future there will be a possibility to write more addresses in From: field.