I've bought a few things online with a credit card, with no problems. If you are concerned, get a new card to use for internet purchases only, and keep a very low credit limit on it (say £150), so that if anyone does get your details, they can't do too much harm. Also, a lot of cards now have a phoneline facility, so you can check your balance daily.
PS - your spelling is fine, but you should have used a capital "L".
Ms Pedantic.