The following example will show all posts except for the post with the ID of 179:

<?php if ( $post->ID == '179' ) continue;?>

This is something that I get a lot of requests for and is very useful in a number of situations.

The example below will skip over any post that is in the category with the ID of 35:

This can be helpful if you want to not show a particular category in your blog (if you have a category based site setup) – or if you want to hide some categories from your search results.

That bit of code will allow you to do something like this which will allow you to show the logged in user’s preferred user name (selected in the User preferences), and then a list of member only pages (private page parent is page ID 20 – I am showing all sub pages of the members-only pages marked as private). If the user is not logged in, they will get a Welcome visitor! greeting :

	<p>Welcome back </p>
	<p>Here is a list of private pages only viewable by Members:</p>
		<ul>
		</ul>
	Welcome, visitor!

You can make it as simple as a change in greeting for members and non-members, or put in specific logic like I did with showing the pages. The potential is limitless.