The majority of Xfire's revenue is generated from a small static image AD that sits within the im client window while a user has the service running (and presumably playing the game).

Xfire的大部分收入来自于用户在使用Xfire即时通讯服务时(大概也在玩游戏时)，窗口中小的静态图片广告。

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Beginning with a small and limited amount of space teaches the player early on that inventory management is an important part of playing the game - and sometimes generating income.

在游戏早期，玩家只有一个小而有限的背包空间，这样会让他们知道物品管理也是游戏的一个重要部分，而且有些时候会获得额外的财富。

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But the PlayStation 4's streaming technology, a marquee feature of the new device, also will allow customers to try titles before they buy them and quickly begin playing a game after only a small segment of its data has been downloaded.

WSJ: Sony Announces PlayStation 4 Videogame Console