Avant Garde Gothic  Suggérée par IInsensate 

for ARTSY ?

Yes. I went to their website and used an app called Fount to click on the font being used for the page.
It said Avant Garde Gothic ITC W10D

Which I really don't know what the w10d stands for...

The CONNECT WITH TWITTER looks like

ITC Avant Garde Gothic Pro DemiBold

Thank you so much for the tip