Viewers voted from a selection of 100 episodes on www.nick.co.uk . The maximum number of episodes any one person could vote for at a time was 10. It also entered them into a draw to win SpongeBob prizes. They could also keep voting over and over.
47. Squidtastic Voyage (The last 10 seconds (approx.) of the episode was shown, then That's No Lady played by mistake. This was fixed in the second airing of the marathon.)
"Driven to Tears" was announced as episode 98 but "Rule of Dumb" was shown instead.
"Hocus Pocus" was announced as number 67 but "The Thing" was shown instead.
"Trenchbillies" was announced as number 28 but "Curse of the Hex" was shown instead.
"Squidtastic Voyage" was announced as number 47 but only the last couple seconds were aired as That's No Lady instead.
Trivia
Viewers could only vote out of 100 episodes so these were the 100 episodes on the list so that every episode that users could vote for was on the list.
Season 8 had only two episodes on the voting list. Season 4 had the most episodes on the voting list.
Daniella Monet talked about episode 94.
Some of the "House of Anubis" cast talked about some episodes.
Matt Bennett talked about episode 4.
Leon Thomas III who plays Andre from Victorious, talked about episode 70.
13 out of the 41 episodes from Season 1 made the list: Help Wanted (#69), Bubblestand (#16), Plankton! (#90), Hall Monitor (#0), Sandy's Rocket (#33), F.U.N (#3), MuscleBob BuffPants (#9), I Was a Teenage Gary (#12), Karate Choppers (#29), Suds (#34), Rock Bottom (#41), Texas (#36) and Neptune's Spatula (#38).
16 out of the 39 episodes from Season 2 made the list: Squid's Day Off (#71), Something Smells (#70), Big Pink Loser (#56), Dying for Pie (#55), Imitation Krabs (#77), Wormy (#43), Prehibernation Week (#46), Dumped (#40), Squirrel Jokes (#24), Gary Takes a Bath (#39), Welcome to the Chum Bucket (#81), The Secret Box (#68), Band Geeks (#1), Krusty Love (#84), Sailor Mouth (#78) and The Fry Cook Games (#11).
15 out of the 37 episodes from Season 3 made the list: The Algae's Always Greener (#97), My Pretty Seahorse (#42), Nasty Patty (#74), Idiot Box (#2), Doing Time (#52), Snowball Effect (#31), As Seen on TV (#82), No Weenies Allowed (#27), Rock-a-Bye Bivalve (#10), Mid-Life Crustacean (#86), Safety Freak/I Had an Accident (#80), Krabby Land (#88), The Camping Episode (#22), Missing Identity (#89) and Plankton's Army (#91).
18 out of the 39 episodes in Season 4 made the list: Fear of a Krabby Patty (#35), Krabs vs. Plankton (#64), Enemy In-Law (#87), Mermaid Man and Barnacle Boy VI: The Motion Picture (#49), Patrick SmartPants (#66), SquidBob TentaclePants (#50), Mrs. Puff, You're Fired (#85), Whale of a Birthday (#51), Karate Island (#73), New Leaf (#72), Squidtastic Voyage (#47), That's No Lady (#5), Hocus Pocus (#67), Driven to Tears (#98), The Pink Purloiner (#96), Squid Wood (#53), Best Day Ever (#4) and The Gift of Gum (#25).
6 out of the 41 episodes from Season 5 made the list: New Digs (#83), Breath of Fresh Squidward (#30), Sing a Song of Patrick (#75), Blackened Sponge (#58), Mermaid Man vs. SpongeBob (#48) and 20,000 Patties Under the Sea (#8).
17 out of the 48 episodes from Season 6 made the list: House Fancy (#18), Krabby Road (#37), Spongicus (#76), Not Normal (#45), Giant Squidward (#26), Patty Caper (#92), Plankton's Regular (#63), The Slumber Party (#21), Krusty Krushers (#20), The Card (#32), Dear Vikings (#61), SpongeBob RoundPants (#54), Komputer Overload (#93), Toy Store of Doom (#6), Sand Castles in the Sand (#14), Chum Bucket Supreme (#57) and Chum Caverns (#62).
14 out of the 50 episodes from Season 7 made the list: Someone's in the Kitchen with Sandy (#65), Model Sponge (#17), Squidward in Clarinetland (#19), Summer Job (#100), One Coarse Meal (#99), Gary in Love (#13), Rodeo Daze (#79), Gramma's Secret Recipe (#60), Trenchbillies (#28), The Abrasive Side (#15), You Don't Know Sponge (#44), Tunnel of Glove (#23), Big Sister Sam (#7) and Perfect Chemistry (#59).
2 out of the 45 episodes from Season 8 made the list: The Other Patty (#95) and Oral Report (#94).
Season 4 was the season with the best performance by entry with 18 of its episodes making the list, whereas Season 8 was the worst with 2 episodes.
The best performing episodes from each season were:
Season 1: F.U.N (#3)
Season 2: Band Geeks (#1)
Season 3: Idiot Box (#2)
Season 4: Best Day Ever (#4)
Season 5: 20,000 Patties Under The Sea (#8)
Season 6: Toy Store of Doom (#6)
Season 7: Big Sister Sam (#7)
Season 8: Oral Report (#94)
The worst performing episodes from each season were:
Season 1: Plankton! (#90)
Season 2: Welcome to the Chum Bucket (#81)
Season 3: The Algae’s Always Greener (#97)
Season 4: Driven to Tears (#98)
Season 5: New Digs (#83)
Season 6: Komputer Overload (#93)
Season 7: Summer Job (#100)
Season 8: The Other Patty (#95)
Despite having an unequal amount of episodes for each season: Season 8 had the best performance by ranks added up with 189 whereas Season 4 was the worst with an added score of 1027. If it was by the overall rank it would be Season 1 at an overall of 34 whereas the worst would be Season 8 at 95.
The marathon was repeated on Nicktoons UK and Ireland starting on September 1 and ending September 2, 2012.