According to Valve's statistics page for Steam, the online service has set a new concurrent user record. On Dec. 29 Steam had 7.6 million of its 65 million members logged in at the same time, setting a new record for peak concurrent usage. This number is up slightly up from 7 million concurrent users recorded over the Thanksgiving holiday weekend and the all-time high of 6 million concurrent users in 2012.
Other interesting data from the statistics page: Valve's free-to-play MOBA game Dota 2 continues to be the most popular game on Steam, with over half a million playing at any given time. Left 4 Dead 2, which Valve gave away for free on Christmas, saw 75,000 people playing over the weekend.
Valve is running its 2013 Holiday sale, which officially ends on January 3. The sale features daily deals as well as flash deals that are offered for a limited time. You can check the sales out by logging in with your Steam account or visiting store.steampowered.com.