I had purchased uv filters (cheaper 10-25$) for a lot of the lenses that I own but recently stop using them. Was a habit since I started buying more expensive equipment besides the basic point and shoots, and that was only because it was 'recommended' on some blogs and stores.
Noticed a difference in contrast and flare/glare and ghosting being absent after removal. The hood works and also keeping the cap on when not in use. Also can carry a small lens-pen in the bag if you are worried.
The special effect and polarizing filters would make more sense. Also is you are going to a environment like a beach or something.
Over at DigitalRev they had made a video on this subject -
• Video Link
Funny guy with good reviews, luv his shows.