ROBLOX is a very educational game and inspires kids to learn. Moderators do a good job of monitoring the site and generally keep it safe. Violence is frequently seen in games, considering that this is the type of audience that the game caters to. Privacy is only an issue if kids are not taught to be safe. In many instances, people have complained that their kids are not safe because users try to get personal information from people. Although this does not often happened, and is exaggerated by parents, the fact may be their fault because they are leaving their kids uneducated; this is probably the main reason that privacy is an issue. Another complaint that many parents had was the online dating factor. The site does NOT support online dating, and will take moderation actions on kids that pretend to have "girlfriends" or "boyfriends." Language is not an issue at all. In game chat filters, as well as over the website, there are filters that filter any language besides the minor "hell" that players might try to shout out. Disguising of language to try to bypass filters is looked for by moderators, and is most always found and punished. The final issue is consumerism. This is probably the most major issue on Roblox. There are MANY ads that link to different companies which are place in banners and rectangles all over the site. Parents should know that users can also create their own ads to solicit items that they have created which feature images and captions (which are both moderated). Also, ROBLOX has recently been showing video ads for different companies before users enter a place (these companies are generally ones such as insurance, phone carriers, car companies, and etc. that advertise).
Although Roblox does have its flaws, it is mostly a friendly game that encourages children to build and program. Issues are only minor issues that can be found in a game as friendly as Disney's Club Penguin, but are over-exaggerated often. ROBLOX is probably best for kids in their early teens and up.