Weird Things and Fine Sizes

[Thefifthglyph]

Just out of curiosity on fine-sized creatures

1) Same line of sight as all creatures... can bigger creatures see them especially from afar? (Great eyesight btw)
2) How can one use AoO on them (example like when they are casting spells)? What happens when they are within another creature's space (better yet on his person)? Will the AoO also hits the larger creature?
3) Since spells have a "fixed" size (designed for small/medium/large creature) on area of effect, range, effect, line of effect etc; What happens if a fine-sized wizard would cast an any orb spell and the like? Fly spells still gets the 60' speed effect (wow, very fast vermin)? Is there any on the rules that handles size circumstances?
4) Damage of spells cast by fine-sized creatures do not change? How about sneak attacks?

 

[frankthedm]

4) Damage of spells cast by fine-sized creatures do not change? How about sneak attacks?

damage on sneak won't change, but you won't be getting sneak damage withought flight or a missle weapon with a large enough damage die to do damage at that size.

Sneak Attack: If a rogue can catch an opponent when he is unable to defend himself effectively from her attack, she can strike a vital spot for extra damage.
The rogue’s attack deals extra damage any time her target would be denied a Dexterity bonus to AC (whether the target actually has a Dexterity bonus or not), or when the rogue flanks her target. This extra damage is 1d6 at 1st level, and it increases by 1d6 every two rogue levels thereafter. Should the rogue score a critical hit with a sneak attack, this extra damage is not multiplied.
Ranged attacks can count as sneak attacks only if the target is within 30 feet.
With a sap (blackjack) or an unarmed strike, a rogue can make a sneak attack that deals nonlethal damage instead of lethal damage. She cannot use a weapon that deals lethal damage to deal nonlethal damage in a sneak attack, not even with the usual –4 penalty.
A rogue can sneak attack only living creatures with discernible anatomies—undead, constructs, oozes, plants, and incorporeal creatures lack vital areas to attack. Any creature that is immune to critical hits is not vulnerable to sneak attacks. The rogue must be able to see the target well enough to pick out a vital spot and must be able to reach such a spot. A rogue cannot sneak attack while striking a creature with concealment or striking the limbs of a creature whose vitals are beyond reach.

 

[Thefifthglyph]

damage on sneak won't change, but you won't be getting sneak damage withought flight or a missle weapon with a large enough damage die to do damage at that size.

You are correct on weapon damage made by fine-sized weapons (no minimum of 1 damage rule if it goes below 1d2), but weapon-like spells such as ray of frost can initiate a sneak attack if certain conditions are met.