AbdulAlhazred
Legend
Forced movement is a game term, which refers solely to push/pull/slide and to nothing else that force someone to move. Teleportation is no considered forced movement and does not grant any saving throws at the moment.
However the designers have already stated their intend to add a saving throw in such situations to the teleport rules.
Yup, by RAW you can teleport someone anyplace and there's no save at all. Its very common to house rule this in various ways. It kind of seems like the designers didn't really intend for teleport powers to be quite this powerful but its definitely open to debate, and of course there is the school of thought which says just don't put a bottomless pit in your encounter if you don't like things to be teleported into it...