":Yes, that's what I did when I analyzed the charts I posted above.  However, this all begs the question: what do we make of the ""Top 40 Mainstream"", ""Top 40 Tracks"", ""Top 40 Rhythmic"", and ""Adult Top 40"" charts during the 80's and 90's, and of the ""Pop 100"" that has appeared recently?  What The ""Pop 100"" is today greatly resembles the ""Hot 100"" of the early 80's through 1998, when it was compiled ONLY from the four ""Top 40"" singles charts that I mentioned above.  Since 1998, country, rap, urban, R&B;, latin, dance, and rock stations have been included in the Hot 100, making it ""more competitive"".  It's harder for ANYONE to have a big hit today, especially the artists who receive their main support from one of the four ""Top 40"" charts that I mentioned.  This also means that, on occasion, we'll see a non-hit (i.e., a song that hasn't received any support from the pop Top 40) that charts in the Top 40 of the Hot 100, based only on excessive support from one of the specific genres.  This happens especially often with country and rap singles.  Presently, a song called ""Making Memories Of Us"" by Keith Urban is #37 and rising on the Hot 100.  Has anyone who listens to Top 40-geared radio ever even heard this song?  Is this song really an American ""hit""?  Can we say Keith Urban has had ANY mainstream success in America?  USUALLY, but not always, pop radio mimics the Hot 100, so big hits on other formats naturally ""cross over""but it's not the case with this song.  Just some things to think about.  Prior to the change in 1998, ""Top 40 Tracks"" (a compilation of mainstream top 40, rhythmic top 40, and adult top 40) was nearly identical to the Hot 100.  Some say that the Top 40 Tracks chart is more representative of real, mainstream hits. 

 Compare the following: 

 Current top 40 of Pop 100: 

 1 1 13 Hollaback Girl, Gwen Stefani  
 Interscope | 004435* 1  
 2 2 7  
 We Belong Together, Mariah Carey  
 Island | IDJMG 2  
 3 3 8 Don't Phunk With My Heart, The Black Eyed Peas  
 A&M; | 004799* | Interscope 2  
 4 4 10  
 Behind These Hazel Eyes, Kelly Clarkson  
 RCA | RMG 4  
 5 5 15 Switch, Will Smith  
 Overbrook | Interscope 4  
 6 6 29 Since U Been Gone, Kelly Clarkson  2  
 RCA | RMG 1  
 7 7 26 Mr. Brightside, The Killers   
 Island | IDJMG 5  
 8 12 11 Oh, Ciara Featuring Ludacris  
 Sho'nuff-MusicLine/LaFace | 68177* | Zomba 8  
 9 8 23 Let Me Go, 3 Doors Down  
 Republic/Universal | UMRG 8  
 10 9 9 Incomplete, Backstreet Boys  
 Jive | Zomba 6  
 11 14 12 Just A Lil Bit, 50 Cent  
 Shady/Aftermath | 004726* | Interscope 11  
 12 11 17 Lonely No More, Rob Thomas   
 Melisma | Atlantic 6  
 13 13 19 Hate It Or Love It, The Game Featuring 50 Cent  
 Aftermath/G-Unit | Interscope 9  
 14 10 16 Lonely, Akon  
 SRC/Universal | 004541* | UMRG 3  
 15 15 19 Sugar (Gimme Some), Trick Daddy Featuring Ludacris, Lil' Kim & Cee-Lo  
 Slip-N-Slide | Atlantic 13  
 16 23 7 Don't Cha, The Pussycat Dolls Featuring Busta Rhymes  
 A&M; | 004685 | Interscope 16  
 17 17 19 Scars, Papa Roach  
 El Tonal | Geffen 17  
 18 20 21 Collide, Howie Day  
 Epic 18  
 19 21 26 Disco Inferno, 50 Cent   
 Shady/Aftermath | Interscope 7  
 20 22 17 Candy Shop, 50 Cent Featuring Olivia   
 Shady/Aftermath | Interscope 2  
 21 26 32 1, 2 Step, Ciara Featuring Missy Elliott  2  
 Sho'nuff-MusicLine/LaFace | Zomba 1  
 22 18 29 Boulevard Of Broken Dreams, Green Day   
 Reprise 1  
 23 19 28 Karma, Alicia Keys  
 J | RMG 7  
 24 16 8 Feel Good Inc, Gorillaz/De La Soul  
 Parlophone | Virgin 16  
 25 29 12 Baby I'm Back, Baby Bash Featuring Akon  
 Latium/Universal | UMRG 25  
 26 25 27 Rich Girl, Gwen Stefani Featuring Eve   
 Interscope 3  
 27 27 3 Errtime, Nelly Featuring Jung Tru & King Jacob  
 Derrty/Universal | UMRG 27  
 28 32 18 You And Me, Lifehouse   
 Geffen 23  
 29 33 13 Chariot, Gavin DeGraw  
 J | RMG 29  
 30 28 9 Beverly Hills, Weezer  
 Geffen 17  
 31 35 7 Untitled (How Can This Happen To Me?), Simple Plan  
 Lava 31  
 32 37 7 Holiday, Green Day  
 Reprise 26  
 33 24 21 Obsession (No Es Amor), Frankie J Featuring Baby Bash   
 Columbia | 70386* 3  
 34 36 6 Speed Of Sound, Coldplay  
 Capitol 14  
 35 31 30 Caught Up, Usher  
 LaFace | Zomba 6  
 36 30 19 Goin' Crazy, Natalie  
 Latium/Universal | UMRG 10  
 37 34 9 B.Y.O.B., System Of A Down  
 American | Columbia 34  
 38 45 5 Listen To Your Heart, D.H.T.  
 Robbins | 72116 38  
 39 44 11 Girlfight, Brooke Valentine Featuring Lil Jon & Big Boi  
 Subliminal | 76601* | Virgin 39  
 40 60 27 Bless The Broken Road, Rascal Flatts  
 Lyric Street 40  

 Current top 40 of Hot 100: 
 NEWLIN