Roboto is an open-source typeface created by Christian Robertson and published by Google Font. Roboto is design workhorse that is especially popular on the newspaper websites.
This sans serif makes long paragraphs thoroughly legible and it works well for the menu and footer.
Google Maps y Google+ use Roboto in their layout.
best used for
logo, title, menu, footer, body of text
COMBINes well with
+ Example: Roboto and Playfair Display
Roboto appears in the body of the text while Playfair Display appears is used for the titles