what formats can blender take

i am wondering whether to download blender it certainly looks hard to use, one of the deciding factors is whether it can import 3d models in sketchup/3ds/obj/glovius formats, can someone please provide a list of all the model formats i can import into it. also can i export 3d models from blender to formats such as the ones i can import with, for example importing a 3ds file and then exporting an obj?

http://code.blender.org/index.php/2011/01/importers-and-exporters/ = old but useful