Sedo hosted a 4 letter .com domain name auction that concluded yesterday. This themed auction is separate from the monthly Great Domains auction. Although the sale resulted in just over $24,000 worth of domain name sales, I think it is worth highlighting because it offers some insight into the current state of the 4L .com marketplace.
The top three LLLL.com sales in the auction were RVRR.com for $2,550, LOTB.com for $2,050, and PRCH.com for $1,605. I do not see any one word names that sold in this auction, so I suspect most would be used for their acronym value.