Best Blackhat Forum

I have this MASSIVE list of networks but I wanted everyones opinion on which ones are the best to start with. Too many options I've been doing research for hours and need help breaking it down to a few 3-5 if possible.

4th Screen Advertising http://www.4th-screen.com
a mo bee http://www.amobee.com
Aarki aarki.com
AdBucks adbucks.com
AdColony http://www.adcolony.com
Addictive Mobility http://www.addictivemobility.com
Adfonic adfonic.com
Adfrap http://www.adfrap.com
AdIQuity adiquity.com
Aditic http://www.aditic.com
AdJizz adjizz.com
Adjuggler http://www.adjuggler.com
AdMarvel http://www.admarvel.com
Admeld http://www.admeld.com
Admob http://www.AdMob.com
AdMob24 http://www.admob24.com/
Admoda admoda.com
Adorika http://www.adorika.com
AdRemixer http://www.adremixer.com
Adsmobi http://www.adsmobi.com
ADTECH http://www.adtech.info/mobile
AdTheorent http://www.AdTheorent.com
AdTriple http://www.adtriple.es
Aduity http://www.aduity.com
AdultAdWorld adultadworld.com
AdultMobileTraffic adultmobiletraffic.com
Adultmoda http://www.adultmoda.com
AdWhirl http://www.adwhirl.com
AdXpansion adxpansion.com
AirPush http://www.airpush.com
AOL Advertising advertising.aol.com
Applifier http://www.applifier.com
Apprupt http://www.apprupt.com/en
Axonix axonix.com
Burstly http://www.burstly.com
Buzz City buzzcity.com
Cauly http://www.cauly.net
Celltick http://www.celltick.com
ChaCha about.chacha.com/advertising
ChartBoost chartboost.com
Chitika http://www.chitika.com
ChokerTraffic http://www.chokertraffic.com/
Crisp http://www.crispwireless.com
Decisive http://decisive.is/
Decktrade http://www.decktrade.com
DoubleClick http://www.google.com/doubleclick/advertisers/
Enrich http://www.enrichmobile.com
epom epom.com
EroAdvertsing ero-advertising.com
Exoclick https://www.exoclick.com/
Facebook https://www.facebook.com/advertising
Gigafone http://www.gigafone.com
Google Adwords google.com/adwords
Google Mobile Ads http://www.google.com/ads/mobile
Greystripe http://www.greystripe.com
GTSMobi http://www.gtsmobi.com
Hands web.hands.com.br
Human Demand http://www.humandemand.com
Hunt Mobile Ads huntmads.com
iLoop mobile http://www.iloopmobile.com
iM@ Mobile http://www.imatmobile.com
InMobi http://www.inmobi.com
inneractive inner-active.com
Jampp http://www.jampp.com
JuicyAds http://www.juicyads.com
Jumptap http://www.JumpTap.com
Kiip http://www.kiip.me
Komli Mobile http://www.komlimobile.com/index
Leadbolt http://www.Leadbolt.com
Leanmarket http://www.lean.com
LoopMe Media http://www.loopme.biz
Lunar Ads http://www.lunarads.com/
Madhouse http://www.madhouse.cn/cn/index.php?sid=
mAdserve http://www.madserve.org
Madvertise madvertise.com/en
Marchex http://www.marchex.com
Matomy http://www.matomymobile.com
MdotM mdotm.com
Media Armor http://www.mediaarmor.com
Medialets http://www.medialets.com
Mediamind http://www.mediamind.com
Medio http://www.medio.com
Metaresolver http://www.metaresolver.com
Microsoft Mobile Advertising advertising.microsoft.com/mobile-advertising
MilePicsAds http://www.milepicsads.com
Millennial Media http://www.millennialmedia.com
mKmob http://www.mkmob.com
mMedia http://www.mmedia.com
Mobbnet mobbnet.com
Mobclix mobclix.com
MobFox http://www.mobfox.com
MobGold http://www.mobgold.com
MobHero http://www.mobhero.com
MobiAdz http://www.mobiadz.com
Mobiaoz http://www.mediaarmor.com
Mobicow http://www.mobicow.com
Mobile Theory http://www.mobiletheory.com
MobileFuse http://www.mobilefuse.com
MobileIQ http://www.mobileiq.com
MobilePosse http://www.mobileposse.com
Mobislov http://www.mobisolv.com
Mobixell http://www.mobixell.com/advertising
Moblin http://www.moblin.com
MobYD http://www.mobyd.com
Mocean Mobile http://www.moceanmobile.com
Mojiva http://www.mojiva.com
Moolah http://www.moolahmedia.com
MoPub http://www.mopub.com
Moversa http://www.moversa.com
Myscreen http://www.myscreen.com
NativeX nativex.com
NexAge http://www.nexage.com
OnMOBi http://www.on-mobi.com
OpenX http://www.openx.com/mobile
OutThere Media http://www.out-there-media.com
Phluant http://www.phluant.com
Placeplay http://www.placeplay.com
Playhaven playhaven.com
PlugRush http://www.plugrush.com
Pontiflex http://www.pontiflex.com
PopAds https://www.popads.net/
PopCash http://popcash.net/
Pubmatic http://www.pubmatic.com
Puca http://www.puca.com
RadiumOne http://www.radiumone.com/
Reporo http://www.reporo.com
Revmob go.revmob.com
Rubicon http://www.rubiconproject.com/revv-for-mobile
SellAring http://www.sellaring.com
SendDroid http://www.senddroid.com
SessionM http://www.sessionm.com
Smaato smaato.com
Smart Device Media http://www.smartdevicemedia.com
Smobiad http://www.smobiad.com
Sofialys http://www.sofialys.com/
SponsorPay http://www.sponsorpay.com
Star-Advertising star-advertising.com
Startapp startapp.com
StrikeAd http://www.strikead.com
Tap for Tap https://tapfortap.com/
Tap.me tap.me
TapGage http://www.tapgage.com
TapIt! tapit.com
Tapjoy http://www.tapjoy.com
TapTap Networks http://www.taptapnetworks.com
TastyAds http://tastyads.biz/
ThinkNear thinknear.com
ThirdScreenMedia http://www.thirdscreen.com/brand-companies
TMS Factory http://www.tmsfactory.com
TodaCell http://www.todacell.com
TradeMob http://www.trademob.com
TrafficFactory trafficfactory.biz
TrafficForce trafficforce.com
TrafficHolder http://www.trafficholder.com/
TrafficJunky http://marketplace.trafficjunky.net/
Tremor Video http://www.tremorvideo.com
Twinpine http://www.twinpinenetwork.com
Vdopia mobile.vdopia.com
Velti http://www.velti.com
Vserv http://www.vserv.com
w3i http://www.w3i.com
Wapstart wapstart.ru/en
Webmoblink webmoblink.com
WebTrafficGeeks https://www.webtrafficgeeks.com/
Widespace http://www.widespace.com/en
xAd http://www.xad.com
Yahoo advertising.yahoo.com/products
Ybrant Mobile http://www.ybrantmobile.com
YOC Group en.group.yoc.com
YOOSE http://www.yoose.com
YouMi http://www.youmi.net
YuMe http://www.yume.com
Zumobi zumobi.com