Horizontal Attention Leans Left (Jakob Nielsen's Alertbox) 
Web users spend 69% of their time viewing the left half of the page and 30% viewing the right half. A conventional layout is thus more likely to make sites profitable.
"the behaviors you're seeing..."
A quote by Joshua Porter
iPhone Apps Need Low Starting Hurdles (Jakob Nielsen's Alertbox)
Most mobile applications are used only intermittently, so they must be especially easy during initial use. In particular, upfront registration shouldn't be required before users experience an app's benefits.
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UsabilityPost - Does Your Website Suffer From These 7 Usability Mistakes?
Tips and insights into good design and usability
te-suffer-from-these-7-usability-mistakes/
Browsershots
Check browser compatibility, cross platform browser test
Notable | Easiest way for teams to provide feedback on websites.
Notable allows you to quickly and easily give feedback on design, content, and code on any page of a website or application without leaving your browser.
fivesecondtest
Have users provide quick feedback on your design.
Apollo - easy online image proofing - documents, graphic designs, web designs, maps, photographs, and more... - 27stars
Get feedback and annotations on documents, graphics, and websites.
Usabilla - Transparent Usability: Lean and mean testing
Remote usability testing to collect feedback on a webpage,mockup,sketch or image.
The myth of the page fold: evidence from user testing | cxpartners
Joe Leech and Fiz Yazdi discuss the myth of the page fold using evidence from user testing.
ge_fold_evidence_from_user_testing.htm
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