Now I can speak from my own experience .. I got my 10k Likes achievement 6-19-12.
I had to buy a 4th Rockstar to finish the last 30 minutes of the day, but I was happy to have that option.
MISTAKES I MADE:
I should have reset my abilities earlier - I did it later so I didn't save any credits, ultimately, and I had to buy that 4th Rockstar so it cost me 35 more credits!
I didn't plan ahead - I know my family would have been more supportive but I didn't know a day ahead I was going to attempt the 10k likes achievement, actually.
WHAT WORKED FOR ME:
Blast - As soon as I decided to run the rockstars, I submitted a blast for approval
Changing my profile picture
NOT putting GOING FOR 10K LIKES on any pictures
Global MUMMs
Adding videos & photos & entering the fuLotto
Pimp Outs - Most were given by family/friends who saw the rockstar going and 1 or 2 were trades
Status Changes - I kept it light all day but when I had 8,000 likes, I started asking for help to get to 10k (and that's when I SHOULD HAVE RESET MY ABILITIES!)
Liking EVERYONE I saw
Commenting in the Activity Feed of every page I visited
Timing - I started the first of my 3 (4-hr.) rockstars I planned to run before noon fu-time so I would have a bit of time at the end if I had to go with a 4th one.
THANK YOU!! to everyone who helped me!!
Especially to LMM4FUN & SweetLipsMonica for loaning me Rockstars!