New figures show 64% of people on social media sites in Ireland use Facebook.
The Ipsos-MRBI survey shows 29% use Twitter and 27% go to Google Plus.
Some 25% use Linkedin, while 23% go to Instagram. Pinterest, Tinder and Tumblr also make up the top eight.
Compared to figures taken in January this year, Facebook's usage has dropped 2%, while Twitter has grown by 4%.
Instagram and Pinterest's audiences also grew, while LinkedIn and Google Plus fell.
Source: Ipsos-MRBI
The same survey showed that 51% of us use Facebook Messenger to communicate online.
This is followed by WhatsApp at 49% and Skype at 44%. Others used include Viber (41%) and Snapchat (27%).
However, Snapchat and Viber saw the biggest increases in users here since January - both up 7%.
While WhatsApp grew by just 1%, as did Skype.