For me it has the opposite effect, it makes everything sound less genuine. But hey, I'm just some guy, if people like it...

I find unnecessary clichéd phrases very annoying (e.g "going forward"). Maybe I'm alone in this. It's not because of pretentiousness or language puritanism, it's that it makes me feel that I'm reading something created by corporate PR or some other soulless entity with ulterior motives. My rule of thumb: if you have nothing creative to add, just be simple.