Here is the code. The hashtag link is now clickable so you can quickly view responses and visitors can read how others have responded. Give it a try and let me know if it works for you. Instructions are included as comments in the code.
/* This code automatically inserts a hashtag below your post informing readers you are interested in response posts, and requesting they use a specific hashtag so you can find their response. There is also a mechanism to specify when you do not want a response.
Usage: Edit the "myResponseText" variable below to include your username or whatever text you want to display below posts.
When you don't want a response, type "responseno" anywhere in the post.
Tech note: By default, the text will be inserted above the first horizontal rule (<hr>, or "---" in markdown). This works with the default theme. If you insert horizontal rules in your markdown, you will need to change the code. If you use a different theme, you will need to check if and where it places horizontal rules.
*/
// EDIT this variable
var myResponseText = 'Responses welcome on Read Write.as using #<a href="https://read.write.as/t/username">username</a>';
// Insert response hashtag on posts, but not on the homepage
// Check for post body id
if(document.getElementById("post-body")){
var content = document.getElementById("post-body").innerHTML;
var result = /responseno/i.test(content);
if (result) {
var MyResponseTag = '<div style="margin-bottom: 2rem"><h3>No Responses Please</h3></div>';
var newContent = content.replace(/responseno/gi, "");
document.getElementById("post-body").innerHTML = newContent;
document.getElementsByTagName("hr")[0].insertAdjacentHTML('beforeBegin', MyResponseTag);
}
else {
var MyResponseTag = '<div style="margin-bottom: 2rem"><h3>'+myResponseText+'</h3></div>';
document.getElementsByTagName("hr")[0].insertAdjacentHTML('beforeBegin', MyResponseTag);
}
} else {
// remove responseno flag from homepage if displayed as part of post preview
var bodyContent = document.getElementsByTagName("body")[0].innerHTML;
var newBodyContent = bodyContent.replace(/responseno/gi, "");
document.body.innerHTML = newBodyContent;
}