Finding decent hi-quality vector icons for free from search engines is very hard now, Because I found many results Which leads to sites that wanted to sell you icons. I Think there is no need to pay for things which is available for free. So today I compiled ultimate icons set of Facebook and twitter you can download and use it for free. Enjoy!
1- Facebook-Twitter icons set 1
2- Fluzzy Twitter icons
3- Function twitter Illustrated Icons
4- Facebook ui icons vector
5- HappyBirds Twitter
6- TDS Twitter Icons
7- Facebook and Twitter Logos Vectors
8- Twitter Badges Vectors
9- Follow me on Twitter Buttons Vectors
Seems the first set are not vector logos at all but images embedded in Illustrator.
So cute! Thanks for sharing.