For the most part, yes. The problem is that most patterns tell you to give 5/8ths inch seam allowance and most people just let that go and the fabric soon begins to unravel and will unravel through the seam. My recommendations are to use the overlock stitch function on most machines (it will look somewhat like _ /_ /_ / or _ /_\ _ /_\ _ ) or roll-hem the edges so that it doesn't come appart.
Another option is flat-feld seams. These can take a bit of practice, but end up looking really good if you're working on a project without lining. A flat-feld seam is the same kind of seam used on jeans, sails, and tents, which goes to show you how strong they are. What you do is press the seam open, fold the raw edge under on one side of the seam, and top stitch it down. Then you do the same to the other side. You have to be careful to stretch things enough so that it lies flat, but not too much so that it warps. If you don't have time, just go with one of the other two techniques mentioned above.
Hope this helps and doesn't just confuse. ^_^
