It's important to make your listings stand out on Craigslist. I see many with just a plain paragraph of words mumbled together. Fortunately there is a solution and you don't have to be a expert in HTML programming to do it.
Here are just some simple HTML tags to enhance your listings.
<h2> - Heading tag- you could use (h1, h2, etc...) This will increase the size of your text
<i> - italicized
<br> - break - Jumps your text to the next line
<p> - paragraph - Starts following text in new paragraph
<font size=4> - Change size of your text
<font Face="New Times Roman"> - Changes the font to whatever you desire
<Li type="circle"> - List items and you can also specify the symbol before your list items such as circle, disc, or square
<b> - Bolds your text
<center> - Centers you text
Remember most tags need and ending tag (i.e. <i> your text </i>), except for ones like <br> and <p>, or you could really make everything look like a disaster
HERE IS AN EXAMPLE BELOW OF THE HTML TEXT ENTERED
<h2>*Beautiful well kept home on 2.75 private mostly wooded acres!</h2><br>
<i>*3 Bedroom 2 Full Baths</i><br>
<font size=4>*Very spacious through-out</font><p>
<FONT FACE="Script MT bold">*Almost new...built in 2004</font><br>
*Enjoy the detached deck and permanent block grill. Great for entertaining! <br>
<Li type="circle"> Nicely painted and decorated
<Li type="circle"> Paved parking area
<Li type="circle"> Separate den off of living room
</b><br><br>
<center>Keller Williams Home Towne Realty 240-405-1697
Call Craig @ 240-344-5538 or visit http://www.realtorcraigs.com for more info</center>
HERE IS THE OUTPUT IN CRAIGSLIST

Hope this helps!