This is not a patent, but a published patent application. The claims are published as originally filed. If and when the patent is actually granted, the scope of the independent claim will likely be further limited.
It seems the PCT application was originally sent to the EPO, but they declared lack of competence, possibly because it was considered to relate to business methods.
The subsequent International Search Report prepared by the USPTO seems to indicate that the USPTO may be inclined to grant claim 11. This claim specifies anthe automatically updated display of persistent online conversations across multiple devices.
ApparentlyNot sure if this can be considered an invention - in January 2013.