View of users having same taxonomy terms?
The right way to solve this is by writing a default argument handler.  A patch to do this was started here: https://www.drupal.org/node/721390

A "shortcut" to doing this would be to use the PHP Code default argument handler and plug it in directly.  This is not generally recommended; it would be much better to put the code in a custom default argument handler so you should Google around for how to set one of those up as that's a bit beyond the scope of this question.  But here are the steps for using the PHP Code approach and you can use the same logic for a default argument handler:


Create a view listing users
Add a contextual filter to filter on the user skills field
In the contextual filter option, for "When the filter is not in the
URL" choose "Provide a default value" and select "PHP Code" from the
list.
Assuming your field is named "field_skills", enter the following:


PHP code:

global $user;
$account = user_load($user-&gt;uid);
$terms = array();
if (!empty($account-&gt;field_skills['und'])) {
  foreach ($account-&gt;field_skills['und'] as $value) {
    $terms[] = $value['tid'];
  }
}
return implode('+', $terms);



Down towards the bottom of that form there's a "more" link.  Be sure
to open that section of the form and select "Allow multiple values".


At this point, you should have the list that you want with one caveat: the currently logged-in user will show up in this list.  You probably don't want this.  To prevent that from happening add another contextual filter that excludes the current user from the list:


Add a contextual filter on the User:Uid value
Choose "Provide default value" for "When the filter is not in the
URL" and, out of that list, choose "User ID from logged in user".
Under the "more" link at the bottom, choose the "Exclude" option.