Keeping it simple and honest always sounded like a good idea, but the fact that people have shown that it can work is a big confidence booster.
When you're talking about "we", you're almost certainly talking to hear yourself talk -- "We have an industry-leading solution with years of YOU DON'T CARE ABOUT THIS."
When you're talking about "you", you're probably addressing the customers needs and ways to get those needs satisfied. ("You can use Widget to flangle a foobar in less than 30 seconds, saving you time and getting you home to your kids faster.")
I recently did a video interview with an Icelandic freelance web designer and just posted a small excerpt, of which the main topic was honesty and authenticity in business (he spoke specifically of the "we" talk).
Worth a look: http://www.designlitm.us/articles/honesty_and_authenticity/
I think the better lesson is to tailor your messaging to your target buyer. If you're selling to a level III coder at a big company, put the message in a form (s)he will like.
Personally, I like the approach of avoiding allusions to size on your main site, using the expected language of your customer, and not trying to hide it in your personal communications. It's OK if the company blog unveils how tiny you are, anyone looking there is already interested beyond your size.