Looking at the stats of our own site show that 14% of all users on desktops accessed the site directly. All of the rest found us via search engines or referrals. Compare this to our mobile users and 47% of them found us directly.
– Rob Borely from In-traction in an interesting read called The mobile discoverability problem that talks about how users tend to do less general browsing on mobile phones and tablets but instead be more directional in their behaviour, knowing what they are after.
Image source: www.flickr.com/photos/aftab/3407679291/in/photostream