Manifest v.3 is coming September 2013. The new version will provide users with better interface, easier interaction experience and will be targeted on russian market with closer integration with Vk.com.
Manifest is the place where people share their opinions on things around, their opinions form trends on various matters revealing positive/negative attitude to the subject.
The process is simple and fun, you just hit positive or negative button on camera screen, specify the subject with a tag and your opinion on it, then share it with the community. Whenever certain number of tags match — the trend is formed.