What makes someone leave a website?

[parita handa]

1.Bad Navigation
2.Too many ads
3.Bad Content Structure
4.Obtrusive use of Audio and Video
5.The Registration Requirement
6.Boring content,Boring design
7.Poor Legibility
8.Lack of Frequency.

[jeny]

There is a lot of reason:
like:
Frustrating design of the website,
registration is required,
A lot of adds,Slow load times
and a boring contents of the website.

[RH-Calvin]

A slow loading time of your website also makes visitors leave faster.

[buysellmarket]

You should avoid black hat techniques for better ranking.

[dennis123]

Web site design is driven by what and who you are targeting. The name of the site and tabs are important. The words you use on your website are extremely important.

[Kalpart]

Factors to consider for reducing bounce rate are:
1. Provide relevant content
2. Keep a clear navigation path/menu
3. Speed up the pageload using Google Page Speed plugin
4. Place a search function prominently
5. Get rid of pop-up ads

[nancyisabell]

1.Bad Navigation
2.Too many ads
3.Bad Content Structure
4.Obtrusive use of Audio and Video
5.The Registration Requirement
6.Boring content,Boring design
7.Poor Legibility
8.Lack of Frequency.

Yes, I agree with all but some load time, images, website design also matter, color, using pop ups etc..