Last week, The Atlantic Monthly dropped its paywall that only allowed subscribers online access to back issues (1995 to the present). Now, everyone can browse these old issues freely.
FYI, we have long had online access via several databases to issues from 1993 on.
A few weeks ago, I heard rumors about the possibility of WSJ.com opening itself up to, much as the New York Times did last fall. It seems like the business model of relying on advertising revenue instead of online subscriber fees is winning out.