Some of you might have noticed that I oftentimes use the conjunction "as long as" in my questions and my posts.
I was just wondering -- does "as long as" in the sense "since" [=in view of the fact that, considering, inasmuch as] have any currency in AE, and can it be used just about safely for whatever register of language but the most formal prose?
You might want to consider the following sources and examples for this:
http://www.thefreedictionary.com/as+long+as
As long as (= since/inasmuch as) you're not interested, I won't tell you about it.
As long as (= since/inasmuch as) you're already here, you might as well stay.
As long as (= since/inasmuch as) you have offered, I accept.
As long as you've offered your daughter the possibility for information and she's stated her preference, there's no reason to insist.
As long as you've provided her with the opportunity to learn, it's best that you wait for indications of her readiness... source