Guide to Grammar and Writing – A variety of grammar resources: word and sentence, paragraph, grammar (and quizzes), and GrammarPoll. PPT materials available.
Grammarman Comic – Comics and short videos that teach grammar.
The social media generation(s) are lacking serious, formal writing skills although they do have a more varied skill set that involves technological and social networking skills. Students need to understand the difference between crafting a message carefully using precise language, so they will be taken seriously by their readers.