This simple kit lets you vent your electric (do not use for gas!) inside your house:

http://www.indoorlinttrapfilter.com/

Why would you do this?  In the winter, you can re-claim hot, moist air!!

this Cost us $56.90.

We also ordered the optional “Heat Saver Tee” – a device that lets you switch over to outdoor venting in summer without having to move the vent (not sure how this works yet) for an additinal $17.95