WoT has many benefits but is not a side-effect free drug.

Disadvantages of WoT:

- slows growth: new users need to be vouched by existing users

- barrier to entry: strangers (not well-connected users) will find it difficult to join existing circles

- network effect: reaching critical mass is hindered as two strangers can’t find each other

- lack of diversity: focus on trust means we will favor those with similar views