Design theory: Why do customers give up shopping carts?

Last week, Brendan was working on how to answer 5 unanswered users in a shopping cart (except freight). According to a recent study by PayPal and comscore, 45% of U.S. online customers have been giving up their shopping carts several times in the last 3 weeks.

Why did the customer give up the shopping cart?

46% of online customers claim that high shipping costs are "a very important reason" for abandoning their shopping carts. is free shipping A must in the current economy? Have you ever tried to personalize local shipping charges? Have you ever tried to personalize local freight

Other reasons for giving up shopping carts are as follows:

• Want to make a comparison between shops: 37%--have you kept your shopping cart data for 1 months so that they can look back?
• Lack of money: 36%--can you give a price that makes them hard to refuse?
• Want to get a discount: 27%--do you offer them a discount? This may affect your sales.
• Hope offline Purchase: 26%--Do you offer a possibility for consumers to buy goods at the store?
• No preferred payment method found: 24%--find a way to get cash. To get CASH!!!
• The goods cannot checkout: 23%--! This must be addressed from the product page, or it will damage your brand reputation.
• Unable to find customer service Help: 22%--This can be solved with POA (Action point control).
• Security concerns: 21%--can also be solved with POA, and bring more trust to your site.

Have you ever thought you might need a shopping cart keeper? How many problems have you managed to deal with recently? Have you tested and optimized your shopping cart? If not, why not?