It varies, if it's just a bug fix then the game usually stays the same size as it will just delete the old parts and install the new, if it adds major features then it may take a fewmore megabytes. Unless they rewrite the whole game from scratch then it won't be a problem if your low on space.
minecraft automatically downloads, deletes and install's the updates in the game launcher so you don't have to down load anything.
About $25. After purchase, the game will automatically update itself whenever a new update is released; this includes the final release of Minecraft.
not much. just a few KB, however, the more you change the maps, the more memory it takes. the largest possible map takes 22 MB
Because developing games is much more harder than writing a book or drawing/painting a masterpiece or there just waiting for a date they want to release it at.
minecraft can use anywhere between 256 MB and 512MB of ram on any system.
alot
Minecraft typically uses between 300MB and 900MB of RAM, although it can use more if you play on high settings and expand your world a lot. The game usually gets allocated 900 MB RAM by the operating system (if you have that much).
In order to have villages they would have to update minecraft pe and it would probably take up too much space on your iphone/android.
Yes, the more RAM (Random Access Memory) you have will make Minecraft run smoother, though you don't have to have very much. Closing programs you aren't using at the time helps speed up Minecraft, and also changing your render distance within Minecraft will help speed it up.
It depends on how many blocks you placed and how far you have traveled.
Updates take a long time to design, especially major updates like the 1.2.5 to 1.3 update. The redstone update is a huge update, so it takes much longer than the average bug fix or graphics update.
Not so much. In total you'll need around 50-60 MB. Please note that this is without mods. If you download big mods, it may take more space.
When you update your iPod 4gen it should not screw up your iPod. You apps will still be there.