I started incorporating protein powder into my diet a couple months ago. I found a site online that offered what seemed like a good product so I thought I would give it a try. I sure am glad I did. I have noticed a difference since I started adding more protein to my diet.
Protein powders won't make you thin, but they can help you manage your weight. Muscles need protein to grow. Muscles also burn fat. Ergo, consuming more protein and growing stronger muscles will theoretically help you to burn more fat.
But whether or not you should start taking them is really up to you. If you don't get enough protein just from the foods you consume, it might be a good idea to add a protein supplement to your diet. Just be careful you don't take too much in a day and make sure to drink plenty of water!
Also, for Jeanette, there's a site called BulkFoodsDirect.com. This is where I get my protein from, but they also have a bunch of recipes for breads, muffins, cookies and a few other things. Could be worth checking out.
And, I agree with Kara. Adding a bit of protein to your oatmeal in the morning is a great way to get your carbs and protein in one quick meal. The protein I get is also unflavored, so adding it to just about anything is super easy!