I just saw: one of my proposals looks pretty much like your old logo :) Sorry.

No worries. Just as long as it's not a complete carbon copy of what someone already has...??

No, no, it is not a copy. I really was thinking to combine the C and S letters. And it came this logo. And after I did upload the proposal I entered on your site and see the "mistake" :)
You know, sometimes, your mind is thinking at exactly the same thing as other people's mind.