From go to my blog

a. Guidelines ( 35%).
2. TWITTER (30%).
3. Guugl (20%).
4. developers. org. ua.
5. korkin. com.
6. mediacamp. org. ua.
7. startuplab. wordpress. com.
8. webstream. com. ua.
9. yandex.
10. habrahabr. ru.

surprised Korkin.