From a post on the Textpattern support forums.

<ul><txp:asy_wondertag><txp:article_custom limit="9999" form="listarticles" section="<txp:section />" category="<txp:category1 />" /></txp:asy_wondertag></ul>

From a post on the Textpattern support forums.

<txp:php> if(gps('q') == '') echo 'Hey, remember to search something!'; </txp:php>

Simple link to post each individual article to Japanese social bookmark "POOKMARK".

POOKMARK Airlines
http://pookmark.jp/

<a href="http://pookmark.jp/post?url=<txp:permlink />&title=<txp:title />" title="">POOKMARK THIS</a>

Technorati tracks when other bloggers link to your blog and this widget makes it possible for you to display the number of links on every blog post. We call them "reactions" to encourage readers to follow the conversation. To add the widget, copy and paste the code below into your blog's template.

<script src="http://embed.technorati.com/linkcount" type="text/javascript"></script>
<a href="http://technorati.com/search/<txp:permlink />" rel="linkcount">View blog reactions</a>

Here's how to add "post to" links for del.icio.us, digg, and ma.gnolia to individual articles in Textpattern

del.icio.us

post to <a href="http://del.icio.us/post?url=<txp:permlink />&amp;title=<txp:title />">del.icio.us</a> 

digg

post to <a href="http://www.digg.com/submit?phase=2&amp;url=<txp:permlink />">digg</a>

ma.gnolia

post to <a href="http://ma.gnolia.com/bookmarklet/add?url=<txp:permlink />&amp;title=<txp:title />">ma.gnolia</a>

Clicking one of the those links will automatically post a permanent link for an article and, in the case of del.icio.us and ma.gnolia, the title to one of the above services.

To textpattern/publish/atom.php somewhere around line 131 (in 4.0.2), or after

else {
$Body = '';
// If there's no excerpt, use body as content instead of body as summary
if (!trim($Excerpt))
$Body = fixup_for_feed($thisarticle['body'], permlinkurl($a));
}

add this:

// hack to get pictures to syndicate
if ($a['Section'] == "photo")
{
$img_url = hu."images/".$a['Image'].'.jpg';
$Body = doSpecial('<a href="'.permlinkurl($a).'"><img src="'.$img_url.'" alt="the latest and greatest" /></a>');
}
// /hack

Add this to textpattern/publish/rss.php somewhere around line 62 (in 4.0.2), or after "$Body = (!trim($Body)) ? $thisarticle['body'] : $Body;":

// hack to get pictures to syndicate
if ($a['Section'] == "photo")
{
$img_url = hu."images/".$a['Image'].'.jpg';
$Body = doSpecial('<a href="'.permlinkurl($a).'"><img src="'.$img_url.'" alt="the latest and greatest" /></a>');
}
// /hack

The new releases of textpattern tend to use the new "yoursite.com/category/ZZZ" url format for category listing links. Which means that those category-filtered archives use the "default" template for formatting & so forth.

To handle this on the front page, you need to be able to test if the current view IS a category search, and you also need to test if this ISN't a category search (to display normal front-page content). To do this I had to modify the glx_if plugin - very easy really.

In Textpattern, go to admin > plugins, and click the "edit" link for glx_if. Add the following function anywhere it would seem to fit:

function glx_if_not_category_list($atts, $thing)
{
	global $pretext, $is_article_list;
	return (empty($pretext["c"]) && $is_article_list == true) ? parse($thing) : "";
}

A use for this is shown in this snippet.

You used to have to use rss_suparchive to get an archive of articles broken out by month, but this plugin produces an ungodly number of db queries when dealing with large archives (e.g., hundreds or thousands of articles).

Textpattern 4.0.2 allows you to get the same effect using the good ol' <txp:article> tag, which uses a LOT FEWER database queries.

You can see this in action at Not Far North.

First, you need the glx_if plugin installed.

put this in your "article" page template:

<txp:glx_if_section_frontpage>
   <h2>Archives</h2>
   <dl class="archivelist">
     <txp:article section="article" form="article_archive" />
   </dl>
</txp:glx_if_section_frontpage>

<txp:if_individual_article>
   <txp:article />
</txp:if_individual_article>

If you were attentive, you see that we also need an article_archive form. Create that form and put this in it:

<txp:if_different>
  <dt><txp:posted format="%B %Y" /></dt>
</txp:if_different>

<dd><txp:permlink><txp:title /></txp:permlink>
<br /><txp:excerpt /></dd>

Now, "yoursite.com/article" will display a list of articles broken out by month, and "yoursite.com/article/2/helloworld" will display only that article using the "default" form.

To handle category listings, install the upm_category_title plugin and add this to your front page ("default") template:

<txp:glx_if_category_list>
   <h2>Articles in <txp:upm_category_title /></h2>
   <p><a href="/article/">View all articles</a></p>

   <dl class="archivelist">
     <txp:article section="article" form="article_archive" />
   </dl>
</txp:glx_if_category_list>

<txp:glx_if_not_category_list>
   <txp:article limit="2" form="article_newest" />
</txp:glx_if_not_category_list>

Note that using the above bit of code requires you to modify the glx_if plugin a bit - more about that in another snippet (it's really easy).

By Sencer on the TXP forums
-> http://forum.textpattern.com/viewtopic.php?id=1043&p=2

Make your life developing plugins significantly easier:

1. Use zem’s tamplate.
2. insert row into txp_prefs table with

name = ‘plugin_cache_dir’ and val = ’/full/path/www/textpattern/tmp’
(you can let the other ones default to their respective default value)
3. create a directory /full/path/www/textpattern/tmp
4. drop your plugins (uncompiled) in that directory (make sure plugin name and plugin-filename correspond, e.g. zem_test should be in zem_test.php)
(Note: do not put zem_tpl.php in the same directory)