Frugality blogs have really taken off in the past 3 years, mainly down to the state of the global economy. Saving money and being frugal with your wages is extremely popular as people have less and less money these days after paying rent, mortgage, bills etc. Creating a frugal / save money blog can also be a big earner for you, especially if you choose a good angle to take on this niche. The following examples all have really good angles. They target a specific demographic and they create content that they will love, share and take action with. Those actions can make you money through affiliate links, Google Ads and coupons.