Many people make plans, few carry them out. You posted that March 21, 2012. Now, 1 year and 4 months later, someone apparently independently created a similar logo and is actually doing something with it, not just planning to do so. If you do something with it as well then great! I don't see what the big deal is.
And I'm quite sure that the logo's in the link below are intended to be used or are IN use. So, tell me, why are these companies with many highly experienced legal advisers not fighting eachother over a logo?
Only Apple go so far as to take such petty things to court.
Most of their law suits can be generalised as "It looks similar from this side of the room"
