For Twitter, once your accounts are linked you can choose whether Blipfoto automatically post updates when you post an entry, subscribe to a journal, add a favourite or star an entry.
If you don't want Blipfoto to post automatically then untick all the boxes except "Enable sign in via Facebook".
You can choose to share individual entries to your social media accounts on the upload page.
For Twitter simply tick the "Share to Twitter" box.
For Facebook, after a change in how Facebook dealt with automatic feeds in 2018, there is a slightly different procedure. For details on our Facebook Help Page.