`Repec' is very nice public domain effort in economics which is building up a database of papers in economics. They have a series of email alerts for New Economics Papers (NEPs) where an editor examines the flow of papers and picks a few in a field. I am the editor for the NEP on international finance, so please do subscribe to this as a mechanism to track the literature in this field. They do both RSS and email alerts.
You might also find it useful to setup an RSS or email subscription to the blog through which NIPFP working papers are announced.