I think realtime is the number of plays a song has up to the hour ever since the new week started.
So for example, the realtime currently shows Jason DeRulo as...
Sunday: 1341 spins (-27 from same time last week)
Monday: 1552 spins (+134 from same time last week)
Tuesday (last updated 10 pm EST): 1302 (+27 from same time last week)
Total: 4196 (+163 from same time last week)
1. JAY-Z - Empire State Of Mind = 111.570 (+ 1.651)
2. JASON DERULO - Whatcha Say = 103.477 (- 0.130)
3. BEYONCE – Sweet Dreams = 102.681 (+ 0.839) ▲
4. TAYLOR SWIFT - You Belong With Me = 101.124 (- 1.501) ▼
5. LADY GAGA - Paparazzi = 98.765 (- 0.482)
6. JAY SEAN - Down f/ Lil Wayne = 89.885 (- 1.100)
7. KELLY CLARKSON - Already Gone = 74.070 (+ 0.844)
8. DRAKE KANYE LIL WAYNE EMINEM - Forever = 70.490 (- 0.367)
9. KINGS OF LEON - Use Somebody = 69.484 (- 0.657)
10.MILEY CYRUS - Party In The USA = 68.255 (- 0.891)
11. BRITNEY SPEARS - 3 = 65.903 (+ 0.886)
12. OWL CITY - Fireflies = 63.228 (+ 0.776) ▲
13. JAY-Z/RIHANNA/KANYE WEST - Run This Town = 61.827 (- 2.811) ▼
14. IYAZ - Replay = 61.339 (+ 1.239)
15. DAVID GUETTA - Sexy Chick f/Akon = 60.987 (+ 1.500) ▲
16. BLACK EYED PEAS - Meet Me Halfway = 58.939 (- 0.594) ▼
17. COLBIE CAILLAT - Fallin' For You = 56.261 (- 0.480)
18. LADY ANTEBELLUM - Need You Now = 55.693 (+ 0.191)
19. CARRIE UNDERWOOD - Cowboy Casanova = 54.795 (- 0.080)
20. TAYLOR SWIFT - Fifteen = 54.304 (+ 1.176)
LUKE BRYAN - Do I = 50.709 (+ 0.614)
USHER - Papers = 45.109 (- 0.299)
REBA - Consider Me Gone = 44.786 (+ 0.389)
CRAIG MORGAN - Bonfire = 42.316 (- 0.016)
TREY SONGZ - I Invented Sex f/Drake = 42.219 (+ 0.026)
KENNY CHESNEY - I'm Alive w/Dave Matthews = 41.888 (+ 0.021)
CHRIS BROWN - I Can Transform Ya = 38.990 (+ 0.175)
DIERKS BENTLEY - I Wanna Make You Close Your... = 36.192 (+ 0.168)
LADY GAGA - Bad Romance = 35.289 (+ 1.107)
KESHA - Tik Tok = 34.060 (+ 2.033)
50 CENT - Baby By Me = 33.840 (+ 0.352)
MAXWELL - Bad Habits = 30.789 (+ 0.548)
RIHANNA - Russian Roulette = 29.658 (- 0.697)
CASCADA - Evacuate The Dancefloor = 29.240 (+ 0.130)
JAY SEAN - Do You Remember = 24.949 (+ 0.953)
LETOYA - Regret f/Ludacris = 24.264 (- 1.027)
RIHANNA - Hard f/Jeezy = 23.989 (+ 1.357)
SNOOP DOGG Feat The Dream - Gangsta Luv = 23.817 (+ 0.249)
GUCCI MANE - Spotlight f/Usher = 19.824 (- 0.064)
MELANIE FIONA - It Kills Me = 14.646 (+ 0.454)
MUSE - Uprising = 13.803 (+ 0.129)
JESSE MCCARTNEY - Body Language = 13.176 (- 0.032)
KRIS ALLEN - Live Like We're Dying= 11.519 (+ 0.429)
BOYS LIKE GIRLS - Two Is Better Than One = 11.256 (+ 0.390)
SHAKIRA - Give It Up To Me = 11.095 (+ 0.032)
ALICIA KEYS - Try Sleeping With A Broken.. = 8.926 (+ 0.304)
ORIANTHI - According To You = 5.171 (+ 0.374)
TONI BRAXTON - Yesterday = 5.133 (- 0.602)
MARIAH CAREY - H.A.T.E. U = 5.030 (+ 0.084)
ONEREPUBLIC - All The Right Moves = 4.388 (+ 0.067)
BEYONCE - Video Phone = 4.341 (- 0.118)
TIMBALAND - Morning After Dark f/N Furtado = 4.166 (- 0.174)
LADY GAGA - Telephone f/Beyonce = 2.984 (+ 0.506)
LEIGHTON MEESTER - Somebody To Love f/R. Thicke = 2.331 (+ 0.017)
CHRIS BROWN - Crawl = 2.233 (+ 0.190)
Top 40:
2 1 JASON DERULO Whatcha Say 10320 10111 209 63.298
1 2 LADY GAGA Paparazzi 9628 10382 -754 62.194
3 3 JAY SEAN Down f/Lil Wayne 8625 9629 -1004 51.041
4 4 MILEY CYRUS Party In The USA 8552 9364 -812 47.469
5 5 BEYONCE Sweet Dreams 8492 8986 -494 53.826
6 6 BRITNEY SPEARS 3 7921 7461 460 54.794
7 7 OWL CITY Fireflies 7448 6939 509 42.983
8 8 KELLY CLARKSON Already Gone 7444 6793 651 42.584
11 9 IYAZ Replay 6604 5894 710 41.681
9 10 BLACK EYED PEAS Meet Me Halfway 6189 5961 228 37.589
10 11 TAYLOR SWIFT You Belong With Me 5628 5922 -294 40.258
12 12 KINGS OF LEON Use Somebody 5189 5756 -567 33.881
16 13 DAVID GUETTA Sexy Chick f/Akon 4845 4155 690 31.958
14 14 JUSTIN BIEBER One Time 4221 4403 -182 18.531
19 15 LADY GAGA Bad Romance 4212 3516 696 27.124
22 16 KESHA Tik Tok 4181 2880 1301 27.368
15 17 BLACK EYED PEAS I Gotta Feeling 4031 4240 -209 23.685
13 18 JAY-Z/RIHANNA/KANYE WEST Run This Town 3853 4823 -970 25.404
18 19 CASCADA Evacuate The Dancefl... 3647 3540 107 24.951
20 20 COLBIE CAILLAT Fallin' For You 3572 3464 108 19.949
24 21 JAY-Z Empire State Of Mind... 3492 2658 834 32.597
21 22 RIHANNA Russian Roulette 3356 3112 244 17.75
17 23 BOYS LIKE GIRLS Love Drunk 2858 3699 -841 15.002
23 24 PINK Funhouse 2657 2789 -132 10.328
25 25 JESSE MCCARTNEY Body Language 2656 2560 96 12.051
27 26 SHINEDOWN If You Only Knew 2196 2040 156 7.736
28 27 BOYS LIKE GIRLS Two Is Better Than O... 2155 1807 348 9.426
26 28 MARIAH CAREY Obsessed 1953 2076 -123 13.927
30 29 SHAKIRA Give It Up To Me 1744 1513 231 8.803
35 30 TAYLOR SWIFT Fifteen 1706 1145 561 12.094
29 31 PITBULL Hotel Room Service 1490 1533 -43 10.271
31 32 JORDIN SPARKS S.O.S. (Let The Musi... 1408 1358 50 5.051
43 33 JAY SEAN Do You Remember 1361 807 554 13.08
32 34 NICKELBACK Never Gonna Be Alone 1291 1219 72 4.227
37 35 WE THE KINGS Heaven Can Wait 1281 1106 175 3.352
39 36 KRIS ALLEN Live Like We're Dyin... 1089 1043 46 6.151
40 37 HEY MONDAY How You Love Me Now 1050 983 67 2.687
34 38 PRISCILLA RENEA Dollhouse 1034 1161 -127 2.761
44 39 ORIANTHI According To You 1002 794 208 4.951
42 40 DRAKE KANYE LIL WAYNE EMINEM Forever 979 836 143 7.401
38 41 MICHAEL FRANTI & SPEARHEAD Say Hey (I Love You) 852 1084 -232 5.898
45 42 TIMBALAND Morning After Dark f... 771 737 34 2.638
47 43 ONEREPUBLIC All The Right Moves 766 703 63 1.927
49 44 CREED Rain 748 663 85 2.138
46 45 JESSIE JAMES I Look So Good (With... 733 736 -3 1.75
50 46 THE SCRIPT Breakeven 718 659 59 2.169
33 47 LEONA LEWIS Happy 685 1178 -493 2.74
53 48 DOWN WITH WEBSTER Rich Girl$ 652 527 125 1.341
52 49 COBRA STARSHIP Hot Mess 626 542 84 1.96
48 50 CHRIS BROWN I Can Transform Ya f... 615 675 -60 2.364
^ Argh. Please Britney react, Don't let Kelly get that #1 from you!
Kelly is still far enough behind Britney that even if she keeps these leads on her gains everyday it'll still take a while for her to pass Brit, and thats if she can maintain that lead.