Steam has established a new record of concurrent users using the service at the same time this last Sunday when 7.190.578 players were connected to Valve’s service. The previous record, established in January was 6.6 million users, so this is an increase of more than 500.000 players.
Valve’s service is doing pretty well and it is expected to do even better when the so-called ‘Steam Machines’ will release the next year. These machines could directly rivalize with traditional consoles eating a portion of their market.
Official Source: http://store.steampowered.com/stats/content/