Yes that's right. You can mention us when you want to nominate a 'topcomment' from someone else.

Apart from that we have a script that collects all the comments of 'a certain lengt' that our team of curators checks to see if they deserve an upvote. We have our own policy that decides which content we do and don't upvote.

More info here:
@topcomment/topcomment-curation-service-info