It means experience points.. hence the need to collect them to proceed another level.
You need 46,000 - 52,999 XP for level 30 in FarmVille.
No, never.
No it dosen't.
nothing, apart from getting xp when you buy it, it is the same with most things on farmville
Hay bales
It gives XP points when you buy it, after that it's just decorative
by growing and sowing crops you gain XP then you can level up
Nothing, just gives you XP when you buy it and place it on your farm.
They are decoration for a cool farm. Also they give you a lot of xp compared to the decorations. So if your looking for xp, buy them.
the buildings are for looks and a couple xp. nothing more. They also qualify for the architect ribbon which will gain you additional xp.
433000 XP to reach level 70 in Farmville as per new requirement
If you got a gift of XP points, you will find it in your gift box. Open it and click on "use" below the XP points. It will automatically add to your experience.