Does anyone make userscripts?

Need to learn some functions that'll hide posts on forums

where do I add "text hide()

<li id="post-5880229" class="message  " data-author="Aycko">

   

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<a class="username avatar Av50427l" href="index.php?members/aycko.50427/">
<img src="styles/srk/xenforo/avatars/avatar_male_l.png" alt="Aycko" style="max-height:96px;max-width:96px;" itemprop="photo" />
</a>
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            <a href="index.php?members/aycko.50427/" class="username" itemprop="name">Aycko</a>
            <em class="userTitle" itemprop="title">New Member</em>

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        <strong class="newIndicator"><span></span>New</strong>
       
       
       
       
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            <article>

                <blockquote class="messageText ugc baseHtml">
                   
                    I am currently rank C and train my combos etc. But somehow I cannot connect them. I usually train combos like:<br />
<br />
<ul>
<li>SRK FADC into Ultra</li>
<li>c.MP, c.HP, HK.Tatsu</li>
<li>j.MK, c.LK, c.LP, c.HP, HK.Tatsu or HP.Hadoken</li>
<li>c.LP, c.HP, HK.Tatsu or HP.Hadoken</li>
</ul>In training mode I can land all of them about 90% of the time wit</blockquote>
            </article>

           
           
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