Like any other form of competition on this earth, online poker is continually progressing. This means that doing the same things over and over again is not going to cut it. To compete and win, you have to stay ahead of the pack.
As online poker evolved, people wanted to play more and more tables. But they found that they couldn't keep track of all the moves their opponents were making anymore. As a result, people developed software to do it for them. This software - known as a HUD (Heads Up Display) - provides precise information on how your opponents play. Using programs like PokerProLab's Super HUD, you can see a display of how often someone chooses to play a hand, raise preflop...virtually any statistic you could imagine is available to you.
Use of a HUD is becoming more and more common, and it is extremely hard to make money playing online poker if you are not using a HUD yourself. Not having this information puts you at a huge disadvantage against people who do. In a poker game where you can no longer read the faces of your opponents, a HUD provides the "faces" of online poker: a new way to make reads and therefore pick off your opponents bluffs, or make great folds against an opponent you can't even see.
While using a HUD is crucial, it's often only going to level the playing field. Many of your opponents will be using HUDs as well, so to be a long-term winner you'll likely also need to keep up with the latest advanced poker strategy. The easiest way to do this is to subscribe to a poker-coaching site.
These sites put out regular strategy videos so you can learn how to play poker like the winners do. New videos are produced often, so you are constantly learning the most up-to-date strategy and can stay ahead of the pack. The coaching sites range from a focus on higher stakes (eg. RunItOnce.com) to a focus on smaller stakes (eg. Grinderschool.com) so there is a site for every budget.
These coaches will almost always be using HUDs when they play too, so you will see how advanced strategy and use of a HUD are closely intertwined. Sure, online poker might not be as easy as it was in the "glory days". But with the help of new poker software and coaching sites, you can soar ahead of those who refuse to adapt.