So I was able to work out a solution that adds a menu link similar to Read Write.as. Here is an test example of the menu.
This solution requires you to change the Custom JavaScript of your blog.
All you need to do is change the innerHTML to add the tags that are relevant to you. If you are using a custom domain or domain.writeas.com then the links will work. Otherwise you must have type that out completely like this: https://write.as/cjeller/tag:writing
Below is the JavaScript:
var topP = document.createElement("p");
topP.style.textAlign = "center";
topP.innerHTML = '<nav id="hashtag"><a href="/tag:personal" class="p-category"><span>#Personal</span></a><a href="/tag:poems" class="p-category"><span>#Poems</span></a><a href="/tag:reading" class="p-category"><span>#Reading</span></a></nav>';
var cont = document.getElementsByClassName("description p-note")[0];
if (cont !== null) {
cont.appendChild(topP);
}
else
{
cont = document.getElementById("post-body");
cont.insertAdjacentHTML("afterend", topP.outerHTML);
}
Let me know if you have any further questions!