Or, use the URL function built into this forum software to display some brief but meaningful text instead of the 2-mile-long URL address.
To do this, copy the address you want to link to and then click on the 'URL' button. Paste the address, with a '=', after the first 'url' and before the square bracket, like this:
Click on the button now showing 'URL*' to put in the final '/url'.
The result looks like this:
TinyURL's web site
Yeah, yeah, I know I didn't need to shorten 'tinyurl.com'!