I've gone through dry periods of invites but generally havent been too lonely during my dom career. 36ish is when the big invites started rolling in for me and by 39 I was virtually guaranteed invites. The secret is to get your own missions and build your own teams. Then dazzle them with your dominating skills. Next time they are building a team they will look through there friends list and invite you. I also arranged to do the ice mistral SF at lvl 40 with me, a MM and i think we had 2 corruptors, and we simply ripped through it. If your feeling stuck though give fineous o'malley a shout, I'm parked at lvl 40 just now so not for off your level.
My MA IDs:
Fiend Space: 211464
I agree. This goes for any char. As soon as you've built 2 or 3 succesfull teams, you will have a very full list of friends, and most of the times at least one of them has a decent team going. As soon as you lose touch with your friends, build some teams again ;-)
Ofcourse personally I prefer building a team over joining one. Joining one of the bigger VGs can also help a LOT with finding teams!
Try putting your build in your search comments - sometimes it helps when people are looking for a particular build.
But as previous posts have stated, after joining a few teams, people will starting asking you if you want to team as they will have known how you've played - (provided you've made a good impression 
) -
Don't be afraid to put people on your friends lists also - especially Global Friends list - so you can ask for team if they're on.
@Under Control
Hey,
McCabe is 37 now, look him up, he forms teams on CoV, alternatively ask for teams across the Global channnels as well 
"Like War_Hero said, leave it as it is, it toughens up the softies." - Naz Nomad
Union Heroes
War Borg - Leader of The Paragon Knights
Union Villains
McCabe - Co-leader of The Rogue Knights
Defiant - Supreme Hero
I only just noticed you're in the same SG as me and I actually know who you are :P
I'm only 32, but if you need a teammate I'll SK up if you want 
Let me know when you see me online
Solar-Fury
My Dominator is now 36 on Union and I have never seen a respec, never seen a SF and I spend 20 minutes when logging on sending tells to all in my range asking if their team needs a dominator. Failing this I go grind XP in warburg.
Is this a dominator thing or is it just low numbers on Union in COV?
My 22 Brute gets invites all the time.
@Boerewors