You can also use the URL option to give a name to the link instead of posting the full URL here in the forums. To do that, click "Preview Reply", then look for the options called Instant UBB code.

Click the "URL" option and it should be self-explanatory from there.

Once you do that, you can have a link that looks like this:
Psych Central
instead of:
http://forums.psychcentral.com