Headers vs. paragraphs
The most popular social media network also happens to be the most frustrating of them all to work with as things are often changing or breaking. Facebook does what facebook wants. Offers a wide range of social plugins including liking, sharing, embedded timelines and comments.
Offers the most consistent social sharing tools around. Allows you to embed tweets and tweet buttons with ease.
Very basic tools, only allows you to embed instagrams via an iframe unless you're using their API.
Allows pinning, following and embedding. Easy to use widgets with some good documentation.
Now offers many plugins similar to facebook, share, follow and profile buttons.
Allows embedding, much like instagram and that's it. There's no API for advanced functionality.
The services combine all of the above into a single service so you'll only have to add one peice of HTML code to get sharing on as many social media sites you want.
Lets continue working on your second assignment.