I absolutely LOVED that this site PowerMyLearning is free!!
Not only do a lot of sites have high membership dues, or "free trials" which you soon forget you even subscribed for.... That is, until you get the non-refundable 19.99 charge on your debit card bill.. Yeaaahh- y'all know what I am talking about, don't you?
As I was saying, not only is it 100% free, and free is a GOOD thing-- but in addition: lot of sites worry me, because of the Ads on sidebars which could have viruses and/or tracking cookies, not to mention things inappropriate for children, at times. Even the best of sites like Disney and Nick have these.
Bottom line: You don't know a sites safety without sitting hours researching Even if you do, you'd have to sit on top of an eight year old the entire time they were on the computer to make sure they don't stray that mouse clicker to questionable sites. Now, this may sound bad- but let us have a moment of honesty here: a lot of the times I let my daughter on the computer to get her out of my hair and get stuff done.. and neither of those feats can be accomplished if I have to monitor her every click on the computer.