Too many links, ads detract from online dictionary's value.
Parents need to know that Merriam-Webster is a useful site that includes a complete dictionary and fairly informative encyclopedia. All definitions are purely educational and straightforward. The "English-Spanish" section is helpful for translating words and understanding verb conjugation, and the "Medical" section translates medical jargon into layman's terms. Also, users will enjoy the age-appropriate, word-focused games that improve both vocabulary and memory. Ads (both sponsored and banner) do appear on every page, and links of the sponsored advertisers lure people off the site -- occasionally to iffy material (the "marijuana" entry provided a site on how to grow pot, for example). There's also a store to buy hard copies of Merriam-Webster products.