Come up with a simple effective visualisation user interface to display social sentiments

For example lets assume that we are using a twitter data feeds related to flooding in Sri Lanka

- How can we visualise sentiments
- What types of graphs we can use
- ....

No files, tests, entry points, or implementation technology are named. Start by clarifying the intended Twitter and Facebook feed inputs, sentiment views, and graph types; done should mean an agreed simple visualization UI specification with examples and acceptance criteria.

Written by the indexing model from the issue text.