Why are free trials so effective? The endowment effect explains why people become emotionally attached to products, platforms, and even charities once they’ve invested time, data, or effort into them and how websites use this psychology to build loyalty and retention.

Too many competing colours can make a website feel chaotic and overwhelming. The 60-30-10 colour rule helps create calm, balanced web design by using one dominant colour, one supporting colour, and one accent colour to guide attention naturally and improve visual hierarchy.