There are four blood groups A, B, O or AB and each has a positive and a negative. The most Puma Fenty Rihanna Velvet common is O positive at 39 per cent Puma Fenty Rihanna Velvet of the population, followed up very closely by A positive, which is 36 per cent. The rarest is AB negative, which is only Puma Fenty Rihanna Velvet four to five per cent of the population of Canada.Taking things a step further with an eye toward true photographic awesomeness means really thinking things through. The pictures that garner the most responses on social media sites such as Facebook and Instagram show intention, Hatcher says proof that you spent time thinking about the photo and whether it was really worth posting. "Be picky and don't just post variations of the same picture," he says.