Twitter cards are a great way of making links to your site stand out to other twitter users. They can be used to provide additional information and an image about your page, from within twitter when you expand a tweet. Examples include twitter summary cards that provide a title, description and image, or product cards that can provide information such as price or product category.
I was following a bus the other day and it was so slow. It started me thinking about the design of a bus and how could it be imporved with modern technology. Some of the problems with buses include: