Yeah, I think it's a good idea to have a video chat fairly soon with the person you 'met' online. Their body language really does help you determine who you're dealing with. In summary, I'd say that online dating is a gamble, because people can make themselves look better than they are sometimes. Aside from that, like cheez said, it's easier to shut out the other person if there's a problem. I'm sure you've seen that show Catfish or some snippets of it -- it clearly shows you need to be careful, not to be too hasty to make an emotional connection; to just be skeptical.
But like I said, there's probably nothing wrong with finding people online rather than face to face. I had no issues with it, really, and my problems with it were due to my own stupidity and denial at the time. As for personal information being public there, I personally don't care. People put their personal information everywhere online, and even if you haven't publicized it, it could somehow be online somewhere. Besides, personal information is not *that* personal... I find that people use the term 'personal information' far too much as some kind of buzzword to get themselves scared. People are not going to be able to hack stuff just because they know your last name or that you like cats. Even if they could, they probably have no interest in it. This is similar to the hysteria about Facebook privacy... I don't have any important personal information laid out on Facebook, how much info you supply is all within your own hands, and it's not going to do any harm anyway. If it did do harm, websites wouldn't include it. Simple. Just like when people say 'aspartame is dangerous'... no it is not. In fact, it has been tested (by trustworthy people) just like all other additives and found nonharmful unless you digest insane quantities of it each day, which is impossible. Point is, if it were that harmful, it would not be part of food and drinks.
But anyway, online dating is a gamble. But then, so is dating in real life. Sometimes it's actually easier to think about the connotations behind certain words, if you can look at them online and really toss them around in your head. So I think online dating has its upsides and downsides just like dating in person. What you need to figure out is what upsides and downsides are most important to you personally. Weigh your options. Think. That's all, really.