Master of Squirrel-Fu said:
Synopsis on Eeveelutions:
Vaproeon; Pretty useless, it's slow and doesn't hit as hard as the others. Best to have it learn status boost moves and Baton Pass.
If you can't find a use for Vaporeon's base-130 HP and base-110 Special Attack, then you're doing it wrong, especially considering its default ability is Water Absorb and its Dream World ability is Hydration. Bulky Water-type, bitch.
Rain Dance
Surf
Ice Beam or Grass Knot (pretty sure it learns both)
Rest
In OU if you have Drizzle Politoed, you can swap Rain Dance out for a third attack. Vaporeon has lots of uses, you just have to do a little research. This may not even ne the best way of using it.
Frankly, if any Eeveelution is useless it's Flareon. It has base-130 Attack but no physical STAB move stronger than Fire Fang, which has 55 power. It doesn't get Flame Wheel (60), Fire Punch (75), Blaze Kick (85), Sacred Fire (100, Ho-Oh signature move), Flare Blitz (120 with recoil), or V-create (180 but Def/SpD/Speed all drop). It gets Guts as a Dream World ability but as a Fire-type it can't be burned, which means if you want to self-activate Guts you have to use Toxic Orb, and poison is more dangerous than burns, probably. Also, Flareon is frail like basically all Fire-types, and slow without Flame Charge, which is weak (50 power iirc). Using two of four slots for physical STAB is a bad move. Flareon is a low-grade Fire-type; there are some worse, but many better ones.