I just hung a load of towels on the line a little while ago. It's very warm out, but it's windy, and they'll dry quickly. And they'll smell wonderful. 
I'm not sure, really, how much we save by line-drying. We're on the budget plan with Virginia Power, so it's the same every month. This is our first year doing that; I think they do an adjustment at the end of the year, so maybe we'll find out then if there was a decent-sized savings. But even if there isn't, I'd still use the clothesline. It's nice to get outside and enjoy the fresh air and sunshine.
I do use my dryer for some things--finishing off jeans and shirts so I don't have to iron them, and of course I use it in the winter when it's cold and raining. But it's 25 years old and doesn't dry as efficiently anymore. I think we're going to have to replace it pretty soon.
"When I get a little money, I buy books. And if there is any left, I buy food and clothes." --Erasmus