First off if someone has done a how to on this I didn't find it. This is something that I think makes posts look a lot more appealing. It is turning that long url into text. It is very simple and BP makes it very easy for you to do.
For example: A recent article by Chris Clothier. http://www.biggerpockets.com/renewsblog/2012/07/18/are-appraisers-part-of-the-problem-with-slow-housing-price-recovery/#comment-107417
Can look like this: A recent article by Chris Clorthier.
Short version
[ url=http://www.whateverwebsiteyouwant] Text that people can click.[ /url]
Just remove the space before url in both the first "url tag" and the ending "url tag". Should look like [ur <--- no space at the start.
Long Version
Step 1
When making a new post click on the Link button.
Step 2
You should now have a url tag that looks like this [ url]
Inside of the url tag you will add "=http://www.whateverwebsiteyouwant.com"
It should look like this:
[url=http://www.biggerpockets.com]
Step 3
Ok you are halfway done. On the right side of your url tag you can type what ever text you want to have linked. For instance if we were going to send someone to bigger pockets I would type:
[url=http://www.biggerpockets.com] Bigger Pockets
Step 4
Click on link again just like in step 1. It will "close" the url tag with a closing tag that looks like this [ /url].
All together your link should look like this:
[ url=http://www.biggerpockets.com] Bigger Pockets [ /url]
Additional Information
Try using this in the middle of sentences like below.
Hey real estate pros! Check out this awesome website for networking and real estate investing called Bigger Pockets .
Hey real estate pros! Check out this awesome website for networking and real estate investing called [ url=http://www.biggerpockets.com] Bigger Pockets [ /url].