No, assuming it is an easy task because its available online is a mistake. You are paid for finding good quality defects and your profile and experience is important for selection. Software Testing is misunderstood by alot of people as been "easy" but it is a science with principles and processes like an development model.
I personally have never used the online testing option but cannot see why not if you have a proven track record.
yeah.. its not easy, but a nice job. finding defects!!!! who doesnt like to find faults? ;-)
Actually never heard that testing can be taken up as a part time job. I need to give it a shot .... seriously