Grammar tip #65 is wrong, a comma has been omitted.

I can see your point. I think I prefer it with the comma too. However, there is a lot of leniency on this these days, and authors are free to choose between nothing, a comma and a colon to create the desired flow.

I would point out that your post included a run-on error; i.e., you should have written two sentences.

Thanks for the post. I will amend the tip.