Traditional poker and online poker have many differences. However, the most important is convenience. To play traditional poker, you need to go to a physical casino or poker club, usually some distance from home. And you need to have enough money because the levels you can play are often much higher than online poker.
On the other hand, to play online poker, you just need a laptop and internet connection. You can play comfortably in your own bed, in your pajamas if you want. More importantly, when you play online poker, the stakes are much lower - you can play with just a few dollars. It's also much faster, meaning you can profit more in an hour than at a physical poker table - you can play on multiple tables simultaneously, further increasing your game volume.
One more thing to mention is that when you play traditional live poker, you need to watch your facial expressions because it's easy to judge their next move by looking at their face. With online poker, you're behind the screen, so you can make as many facial expressions as you want.
Of course, RunGood also provides HD video features so you can observe your opponent's face online to judge their next move.