I like this, but I can see where the dissenters are coming from. "Like" isn't really the right word because so many people interpret that as "I like what happened" and not "I like that you wrote about this."

Someone further up the line said "Nod" and something like that might be better. Or just a checkmark. Just something to indicate "I hear you/I read this" and not something that could be taken as "I like this".

I'd also really like to have something along these lines for comments