One thing I'm noticing in a lot of blog and forum posts are links that aren't clickable links. Our site requires you to click the little 'link' icon to add a link. If you're on Windows - you'll likely get a pop up blocker warning - just click 'allow' and then click the link again and paste your link in. Click here: Ning Help for links for a screen shot and more explanation.
If you're familiar with html "a href" - you can also just type that directly.