I honestly love Pinterest and use it to just kind of start my though process when I want to make or create something not only for lessons. I think it is a great resource but I would not necessarily have my students use it. I would also suggest testing some of the ideas you find on Pinterest before you do them in your own classroom.
Even though this site is not teaching specific I think that it can be used for teaching purposes. If you have an idea about a lesson that you want to do, but need an activity you can find so many different ideas on pinterest. Many of the sites will actually take you to the teachers pay teachers site where you can see the work posted by that teacher. Not only can you find lesson ideas but decor for the classroom, logo tees that are inspiring and would be fun to wear in class. Really, you can find anything on this site and sometimes we need ideas and this is a great place to get inspiration.
Pinterest and My Intro to Chemistry and Physics Class
My county has restrictions on what kinds of things students can do online that asks them to use their real information. I would keep this in mind. I have a gmail account for use in the classroom. Studnets can log in under that name and work on whatever assignment I have given them. I have a few email addresses for this use. If a student feels comfortable using their own Pinterest account that is ok, but they should be careful not to share their information with anyone else.
On using the actual app, the students did a great job with this assignment. Both special ed classes and general ed classes enjoyed the variety of choices that come up for each student so there is a wide range of responses.