Various wrestling stars have been putting up messages on Twitter memorializing Randy Savage and mourning his death. I'll update this post throughout the day as more go up.
Update: Hulk Hogan, possibly the wrestler who Savage's career was most memorably intertwined with (and who he had a very complicated relationship with), has commented on his friend and colleague's death a on Twitter:
I'm completely devastated, after over 10 years of not talking with Randy, we've finally started to talk and communicate. HHless than a minute ago via web 
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Hulk Hogan
HulkHogan4Real
He had so much life in his eyes & in his spirit, I just pray that he's happy and in a better place and we miss him. HHless than a minute ago via web Favorite Retweet ReplyHulk Hogan
HulkHogan4Real
We miss him a lot. I feel horrible about the ten years of having no communication. This was a tough one. HHless than a minute ago via web Favorite Retweet ReplyHulk Hogan
HulkHogan4Real
I just pray that Randy's happy and in a better place and we miss him. HHless than a minute ago via web Favorite Retweet ReplyHulk Hogan
HulkHogan4Real
Other tweets after the jump.
RIP Randy "Macho Man" Savage - you were one of my childhood inspirations and heros. Strength, love and prayers to the Savage/Poffo family.less than a minute ago via web Favorite Retweet Reply
Dwayne Johnson
TheRock
Today Team Bring It will celebrate a life - we will kick ass and chase greatness #OOHHYEEEAAAHHH style!less than a minute ago via web Favorite Retweet ReplyDwayne Johnson
TheRock
Our deepest condolences in losing another legend. R.I.P. Randy.less than a minute ago via HootSuite Favorite Retweet Reply
Jim Cornette
TheJimCornette
Just heard of the passing of Randy Savage.A one of a kind great performer.RIP.less than a minute ago via Osfoora for iPhone Favorite Retweet Reply
William Regal
RealKingRegal
I have no words to say. This one hits me hard. We lost one of the best.less than a minute ago via Twitter for iPhone Favorite Retweet Reply
Bret Hart
BretHart
To SAD TO TWEET..less than a minute ago via web Favorite Retweet Reply
Rowdy Roddy Piper
R_Roddy_Piper
In utter shock about Macho Man. So much charisma in one soul. #ripmachomanless than a minute ago via Twitter for iPhone Favorite Retweet Reply
Kharma
Kharma
When I got my start in WCW it was Randy that gave me the rub....my prayers and thoughts to the Poffo Familyless than a minute ago via Mobile Web Favorite Retweet Reply
Bill De Mott
BillDeMott
Hogan vs. Savage at WrestleMania V was the match that got me hooked on WWE as a kid. RIP "Macho Man" Randy Savage. My condolences.less than a minute ago via web Favorite Retweet Reply
Jack Korpela
JackKorpela
Rest in peace Randy-my first inspiration in the ring. My prayers & condolences to the Savage family #RIPMachoManless than a minute ago via Mobile Web Favorite Retweet Reply
Trish Stratus.com
trishstratuscom
Sad 2 hear about "Macho Man"Randy Savage..Only met him once briefly.No doubt 1 of the best & influenced so many performers you see today RIPless than a minute ago via Tweetings Favorite Retweet Reply
Christian
Christian4Peeps
Fuck.less than a minute ago via Twitter for iPhone Favorite Retweet Reply
CM Punk
CMPunk
@IAmJericho jus txt me the news. We've lost one of the greats!! Our prayers go out to the family & friends of Randy Savage.less than a minute ago via Twitter for BlackBerry® Favorite Retweet Reply
Shawn Michaels
ShawnMichaels_
My respect and condolence goes out to a true iconic figure the Macho Man Randy Savage and his family!less than a minute ago via Twitter for iPhone Favorite Retweet Reply
Mr. Stealyourgirl
LuckyCannon
CeNation. The untimely passing of randy savage is indeed tragic. All true fans of wrestling will mourn this loss. One of the all time greatsless than a minute ago via TweetCaster Favorite Retweet Reply
John Cena
JohnCena
RIP Randy Macho Man Savage. My prayers are to your familyless than a minute ago via Twitter for BlackBerry® Favorite Retweet Reply
Vickie Guerrero
ExcuseMeWWE
The lord giveth...and the lord taketh away.......just remember..god always has a plan, even if u do notless than a minute ago via twidroyd Favorite Retweet Reply
Goldust
WWEGoldust
JUST like that! Life can end. Tell those close to ya that you love them cause ya never know! RIP Macho Manless than a minute ago via Mobile Web Favorite Retweet Reply
D Young
DarrenYoungNXT
My prayers are with Randy Savage and his family right now.less than a minute ago via ÜberSocial Favorite Retweet Reply
Natalya
NatbyNature
:(less than a minute ago via Twitter for iPhone Favorite Retweet Reply
Beth Phoenix
TheBethPhoenix
Just heard Macho Man died this morning of a heart attack while driving his vehicle in Tampa. Condolences to all Randy Savage fans/family.less than a minute ago via txt Favorite Retweet Reply
Jim Ross
JRsBBQ
Woke up to some awfully sad news.less than a minute ago via Twitter for BlackBerry® Favorite Retweet Reply
Curt Hawkins
TheCurtHawkins
RIP Macho Man Randy Savage... One of wrestling's all time greats.less than a minute ago via web Favorite Retweet ReplyCurt Hawkins
TheCurtHawkins
I carry this picture in my gear bag ...7yr old Hawkins & my 1st tag team partner. RIP Macho Man. http://yfrog.com/h097hykjless than a minute ago via Twitter for BlackBerry® Favorite Retweet ReplyCurt Hawkins
TheCurtHawkins
To one of my favorite Hall of Famers, inducted or not. Macho Man Randy Savage. R.I.P OOOOOOOOOH YEEEEEEEAH !less than a minute ago via Twitter for Android Favorite Retweet Reply
Jtg1284
Whoa....just heard about macho man Randy savage...God bless the family, the wrestling world just lost one of the greatest ever...R.I.Pless than a minute ago via TweetDeck Favorite Retweet Reply
Ezekiel Jackson
ezekielwwe
Macho Man...simply awesome. Incredible and entertaining in everything he did. One of the best ever. RIPless than a minute ago via web Favorite Retweet Reply
Justin Roberts
JustinRoberts
RIP MACHO MAN. One of my favorites and one of the best of all time. DIG IT! http://t.co/PSYmsrJless than a minute ago via Twitter for iPhone Favorite Retweet Reply
Zack Ryder
ZackRyder
I am profoundly saddened by the passing of one of the all-time greats, Macho Man Randy Savage. My condolences go out to the Poffo family.less than a minute ago via web Favorite Retweet Reply
Howard Finkel
howardfinkel
The Macho Man Randy Savage was one of my heros when I was childhood and one of the best of all time. Rest in peace.less than a minute ago via Twitter for iPhone Favorite Retweet Reply
Yoshi Tatsu
YoshiTatsuWWE