PlayStation 3 consoles have always had Internet connectivity, but players trying to message one another have found that they're considered "busy" while they're in a game. An upcoming firmware update should change all that.
What's been perceived as perhaps Sony's greatest continuing weakness in its full-feature game console battle against Microsoft's Xbox 360 is the continued delay of its all-inclusive online community. This weakness is only compounded by the perception problem the company created for itself, having announced the PlayStation 3's Home service over a year ago, and having since then delayed its rollout, most recently in search for something that's more "focused" on gaming rather than the virtual bar-hopping experience Home was originally touted to be.