Is it possible to serialise an anonymous type?

For example:

new { Foo = 1, Bar = "Hello" }

This would be very useful for us.

Unfortunately, GetSerializer<T> doesn't seem to work, presumably as the properties of anonymous types are read only. Because the returned serializer can both serialise and deserialise, it's not possible to build it. However we only need the serialiser bit.

(cc @lufka)