MSN is expected to begin quietly testing RSS aggregation and blog search Tuesday evening US Pacific Time.

Reports indicate that the new service has been developed in partnership with Moreover Technologies, a will include aggregation and search to MyMSN.

“RSS is getting a lot of traction and we see it as a great tool for people to gain immediacy when it comes to information,” said Brooke Richardson, MSN lead product manager.

At the time of writing the service was not yet live.