Someone did a reality show type sim story once (like a top model thing) and they did put commericals in. It was hilarious.

I don't like actually WRITING ahead of myself. I can think up anything I want but once I write it down (even if it's just a random note) it changes the way I think about it (which usually means the final version is NOTHING like that note). OR (and this frustrates me more) if writing ahead makes me want to stage a lot of pics (with special sets and such) and I find that miserably tedious (I do pose stuff a bit here and there but big productions don't suit me).