[Tagging] Proposal: logo tag. Opinions?

[SwiftFast]

On Tue, 2017-09-19 at 13:06 +0100, Philip Barnes wrote:
> Ignoring the legal arguments for a moment, but what would OSM gain or
> do with this information. How would it help us build a better map?

Navigation. A logo is a distinct physical feature providing an easy way
for a human to locate something on the ground.

But it was pointed out this data is reachable via wikidata. So perhaps
it's redundant to add it explicitly.