1) LinkedIn: This site pretty much has the professional networking platform market cornered. It is completely geared towards building an online professional portfolio using a variety of media options. 2) Facebook: One of the most powerful and well used social media platforms, Facebook is a way to keep in touch with your personal network, which can be valuable in terms of your job search. 3) Twitter, Pinterest, Instagram: Although they tend to be most helpful as promotional platforms for entrepreneurs, these sites do give you a chance to connect with others and build your personal brand with images and content.