This would make a great domain for one of those eBay scams -- it looks like you're buying SIGN.com, but you're actually getting SIQN.com! :lol:
Aside from that, I'm not sure if there's a good use for it yet. It's got three decent letters and a Q, which might be tough for an acronym. Obviously, you'd want to hold on to it for at least a year as the value for LLLL builds. Right now, you would probably expect low-mid $xx wholesale (unless a visionary eBay scammer wants to pay you more ).