Most people will likely never read your profile unless they have a specific reason to, and replying to a post is not a specific reason for many (I basically never check profiles of people I've replied to).
Using upvotes to indicate "I've replied to you" is also going to be drowned out by noise because a poster has no way to know who has upvoted therefore no way of distinguishing your "I've replied to you" upvote from a regular user who upvoted their reply because it was informative/useful.
> Using upvotes to indicate "I've replied to you" is also going to be drowned out by noise because a poster has no way to know who has upvoted therefore no way of distinguishing your "I've replied to you" upvote from a regular user who upvoted their reply because it was informative/useful.
While I fully agree, it works well enough as is :)
Using upvotes to indicate "I've replied to you" is also going to be drowned out by noise because a poster has no way to know who has upvoted therefore no way of distinguishing your "I've replied to you" upvote from a regular user who upvoted their reply because it was informative/useful.