PT Sans is a sans-serif font. It goes well with PT Serif, Trend Sans One, Crimson, Droid Sans, Font Awesome, Trump Gothic East, Playfair Display, Verdana, Abril and Times. If you're thinking about using PT Sans then try 48px for headers. Give 18px a shot for content.
People commonly tag it as uppercase, design, sans serif, serif, restaurant, agency, decorative, art deco, heading and quote. You can get it from Font Squirrel, Fontdeck, Fonts.com, Fontshop, Google Web Fonts, MyFonts, Typekit and YouWorkForThem.