tricider

Tricider is a tool that allows for online brainstorming. It allows you to ask a question and invite others to collect ideas and vote for the favorite.
 * @https://tricider.com/en/t/

Strengths:

 * Free website
 * No registration required
 * Only invited participants can answer/add to a question
 * participants don't have to register
 * You can set a deadline to ensure the discussion comes to a good end
 * Participants can add arguments to ideas and discuss them
 * Questions can be embedded into blogs and other social media platforms such as Facebook and Twitter
 * Questions can be turned into contests

Weaknesses:

 * Free version contains ads

Opportunities:

 * Teachers and students can collaborate together to brainstorm ideas, discuss ideas, and vote on what they think is best
 * Teachers can post a question and get feedback from students.

**Threats**:
Ideas: ELA teachers could get feedback from students on which books they would prefer to read to learn various reading strategies.