By secondary, it means non-damage. So Holds, Immobilizes, Sleeps, Knockback and all that kind of effect. Use Domination then Power Boost and hold someone? They ain't going to be moving for a while, I predict.
Ooh! Then it's going to be very nice indeed
Thanks 
Would that include all the slow effects on the attacks themselves too? As most ice attacks have a small slow element to them
"Well, they found my diary today.
They were appropriately appalled
at the discovery of the eight victims
They're now putting it all together.
Women wrapped in silk
with one leg missing
Eight legs, one body, silk,
spider, brilliant!"
[ QUOTE ]
Would that include all the slow effects on the attacks themselves too? As most ice attacks have a small slow element to them
[/ QUOTE ]ALL secondary effects of ALL your powers 
I think it may. As I recall, Power Boost affects:
Hold, Disorient, Sleep, Fear, Immobilize, Knockback, Slow, Heal, Run Speed, Flight Speed, Jumping Distance, End Drain, To Hit Buff, To Hit Debuff, Defence, Resistance, Defence Debuff and Intangibility (Powers like Dimension Shift/Black Hole, not Phase Shift).
[ QUOTE ]
[ QUOTE ]
Would that include all the slow effects on the attacks themselves too? As most ice attacks have a small slow element to them
[/ QUOTE ]ALL secondary effects of ALL your powers
[/ QUOTE ]
Thanks, so is that all of them then max?
"Well, they found my diary today.
They were appropriately appalled
at the discovery of the eight victims
They're now putting it all together.
Women wrapped in silk
with one leg missing
Eight legs, one body, silk,
spider, brilliant!"
Simply put, Power boost is awesome, TAKE IT!
I could also put it into a simple in-game format...
Domination+Power Boost+Arctic Air+Bone Smasher = Total Ownage!
Powerboost is good,
power boost + hasten = boss holding
That's how I figure it
"Well, they found my diary today.
They were appropriately appalled
at the discovery of the eight victims
They're now putting it all together.
Women wrapped in silk
with one leg missing
Eight legs, one body, silk,
spider, brilliant!"
I held an elite boss for a good while yesterday courtesy to Power Boost and three recharge DOs in Block if Ice, without Domination or Hasten. Took three applications of BoI, the 1st one powerboosted. I wish I knew how long it would have lasted but unfortunately he died 
I am now a convert 
Ah, well I have hlddur in block of ice, so hasten helps me more than powerboost for holding a boss but powerboost does help
"Well, they found my diary today.
They were appropriately appalled
at the discovery of the eight victims
They're now putting it all together.
Women wrapped in silk
with one leg missing
Eight legs, one body, silk,
spider, brilliant!"
How exactly does Hasten help hold a boss? All the end product is, you will be even more drained of endurance after multiple applications, instead of a single power boost and 1-2 applications.
Because it brings the hold back quicker and most bosses take multiple aplications to be held (freak tanks being the exception that springs to mind). Powerboost and hasten are an ideal combination because your first hold lasts longer and you can lay the second one on the guy to stack quicker. But you still need to stack. If you have hold durations in your hold then hasten helps you do this quicker than power boost does, if you have recharges in there then you want powerboost to gain the hold duration. If you have SO's of both in there, then you're lucky and I'll mug you.
"Well, they found my diary today.
They were appropriately appalled
at the discovery of the eight victims
They're now putting it all together.
Women wrapped in silk
with one leg missing
Eight legs, one body, silk,
spider, brilliant!"
[ QUOTE ]
most bosses take multiple aplications to be held
[/ QUOTE ]They all do
How to hold a boss
Bosses have mag3 resistance. You need to cross this barrier. Most holds are mag3. To hold a boss you need mag3 + something more to hold a boss since 3-3=0 and this isnt held.
Controllers have mag3 holds + 20% chance for an additional mag1 meaning they can hold a boss with 1 hold, 20% of the time.
My scrapper has petrifying gaze from the darkness mastery epic (also a mag3 hold).. This hold has a low duration compared to a controller hold. Even if I apply my hold two times on a boss, the boss isnt held because the duration of the hold prevents stacking. The recharge is so high that I cant stack it fast enough.
powerboost
Powerboost doesnt affect magnitude. It effects duration of the hold. Powerboost is like having 4 SO's of hold duration in each hold. Like any build up power is like having 4 damage SO's in a power.
Some examples on magnitude
<ul type="square">[*]Any single target controller hold like char, block of ice, blind are mag3 +20% of an additional mag1.[*]Any epic power hold like char, petrifying gaze, block of ice are mag3.[*]Choking cloud from the radiation set is 40% chance of mag2 hold[*]EM pulse from the radiation set is an AoE mag3 +50% chance for an additional mag 1.[*]Blaster holds are like freeze ray, tesla cage is mag3.[/list]
Where things start to go wrong
When you debuff foes with powers like enervation field or freezing rain (these offer -resistance), you can actually hold bosses with 1 hold as a blaster. Dont ask me how this works, cause frankly I have no idea.
A Paragon Defender
and btw get powerboost and put 3 recharges on it asap.
A Paragon Defender
I have a baby Ice/Ice dom and I see that later on I'll have Power Boost available in my secondary. Now I think it's just my inexperience with this power, but I can't think of many uses for this power for my dom, personally. Please tell me I'm wrong.
It ways that ot boosts the secondary effects of a power. Does it, for example, not boost Arctic Air's Slow effect but boost it's confuse effect? Does it do this if I hit
it whenever I start Arctic Air, or whenever I'm running Arctic Air when hitting power boost, or does it just ignore toggle powers? Does it boost damage for my holds, or hold duration?
I guess most of my attacks in my secondary have slow effects that it could boost but I'm getting better slows from other places so I'm not sure how useful that would be.
Idris