The publisher of one of the pieces I had promised to do this fall (now finished and submitted--hooray!) required the work to be sent to the editor AND uploaded to its manuscript submission site. MLA does its program copy for the convention this way, of course, and ASA has an elaborate online system for panel and paper proposals, as do some other conferences. Most of the manuscript reviewing and program committee work I've done for conferences, however, has been done the old-fashioned way--via email and sometimes paper.
Here's what I want to know: I know that online submission of manuscripts to a database is common in the sciences, but is it widespread in the humanities?
If you've had experience with this (as either a submitter or as a reviewer), what was that like? Is it a better system? Worse? Easier? More frustrating?