Impulse and GamersGate are two pretty well known digital download services - we feature them every week in The Moneysaver - but they didn't show up in an NPD assessment of digital versus brick-and-mortar sales.
Earlier in the week, NPD Group claimed that digital download sales of PC games had almost caught up with games sold in physical retail locations. It's ranking of the top 5 digital distros, however, did not include Impulse or GamersGate.
You might remember the spat over Who's No. 2 last year, (trailing Steam, of course) with Impulse claiming the spot and GamersGate saying no way. Well, Big Download contacted both services to ask what they thought of not even being No. 5 in the NPD report.