tsk tsk

Based on what I've been taught in proofreading courses and, ya know, college, I put spaces around em dashes. It's a point of much discussion, but that's my stance. The person who compiled this grammar checklist can't seem to make up his or her mind. (But, hell YES on burying double spaces into the ground! Preach on!)

Then, just a quick little scroll further down the page:

See, doesn't it just feel more natural to include those spaces? Clearly you want to put those spaces in there. You need to. Despite your beliefs otherwise. Let's all just put the spaces around em dashes and call it a day. Oh! I also prefer a space after ellipses too. (Only when ellipses are being used appropriately, of course. People who get all dot dot dot in the place of just finishing a complete thought often feel my wrath over IM.)