"Learning #English? You've come to the right place. Tweets on English language learning. #ESL #ELT"
They have interesting 'word of the day' tweets as well as a variety of posters about different words. They also retweet some interesting posts from other tweeters (is this correct? What is the correct name for a person who tweets? If you know then please leave the answer in the comments) who tweet about the English language.
I came across one of their posters (see picture) on Pinterest.