Freezing pipes and moist heat
A VERY small drip rate of water at a faucet can prevent pipes from freezing. Venting the dryer inside is a devils bargain. Mold spores, especially in a closed house in the middle of winter, can cause some serious suffering. I suppose that if you are clever you could figure out some sort of condenser- but thats a lot of work... Perhaps get a very very long length of that metallic-foil dryer vent hoze and wrap it in a down-ward descending coil, with the end in a bucket. If water is dribbling out the end of it when the dryer is venting then its doing its job. I doubt the blower on the dryer is equpped to handle that though, and I doubt that kind of condenser will be effective enough...
DL