Dekisugi

This simple and lightweight plugin come with a widget that display the word Welcome along with the username of the current user. This is to give subcribers a sense of warm welcome and hospitality, when they come back to the blog.

Welcome User Widget

A plugin with a simple widget to display welcome message along with the user_login of the current user.

mrdl

Adds the current logged in user ID to a specified string
<pre><code>[user_link url="https://domain.com/link"]A link[/user_link]
</code></pre>
Will output the following HTML
<pre><code><a href="https://domain.com/link?user_id=1">A link<a/>
</code></pre>

Append User ID

A plugin which adds some shortcode to append the current user ID to a link (href).

Welcome User Widget vs Append User ID