All Viking classes should have a button set to 'stick' to your enemies. This is very useful in groups and in RvR! The macro for the button is /macro Stik /stick Place it with your attack styles.

When you're in a group and have a healer, or any caster type for that matter, which may draw creatures to attack them, use this button to stick to the monster youre attacking. Then if the monster attempts to go for the caster, youre right behind it all the way, and may even cause it to turn to attack you again before reaching the caster.

In RvR this button is very handy! Allowing you to stick with an Alb or Hib who's trying to evade or confuse you. This works especially well against stealthers because as long as you continue to hit them they can't hide. Instinctively they run and try to hide, which only gives you a number of free hits on them. I take extreme pleasure in seeing them run around frantically trying to shake me and to hear their pathetic death cry. Hey, I'm a blood-thirsty Viking, and proud of it!

--Mjolnihr Stormheart