I too was taught to wash all fabric before using, so I do. That is a good hint about jelly rolls though; I bet you were hopping mad Missi. I used a lingerie bag the other day for some fat quarters and they raveled just as much as if I had thrown them in separately. I was disappointed. I am going to get some color catchers too - never tried them.
I stopped at a quilt store on my travels last fall in Tennessee and asked the owner about all the wonderful quilts they had hanging in the store - she said they never washed anything because they did not have time!! A lady at Wal-Mart once told me that I should always wash their fabric because of the stuff that gets on the fabric while the floors are cleaned at night etc.
Again, it is a personal preference.