I think they would have to give a few extra words as well, but that something like this can be a nice addition. I like his post but don't think it would really be understood by newcomers.
Every few days we seem to get someone posting to the Effective Altruist Facebook group with a new intervention idea. Often these people don't really understand how Effective Altruists evaluate causes, so this typically needs to be explained to each individual separately. These responses vary in quality and some times the comments can seem harsh for people new to Effective Altruist ideas.
Therefor it seems useful to clarify which kinds of ideas are seriously considered within Effective Altruism and which will not be.
Consider the following cultural groups; Hippies, Catholics, Ravers, Hackers, Geeks, Transhumanists. For each one of these try to imagine what a powerpoint presentation would look like, or what the tone of a presentation would be. What feelings, colors, songs, themes, personalities do you associate with each?