OLX and craiglist are examples of sites that use the type of advert platform that is now on arthurwales.com
The platform is open source so most likely no two sites will be the same as you have a free rein to get your hands dirty manipulating the underlying code.
Please help to review the site by publishing an advert (or more!). You may also compare to earlier mentioned sites.
By the way, it looks good on mobiles too.
Posted from WordPress for Android