Could someone tell me what hashes are for?

[ggnath]

Are they for CGing? Cause I'm so lost right now >_>

[dizzle]

could everyone stop making these threads

[neopets_player123]

they are for hacking into accounts

[kapa]

The MD5 is a checksum (numeric representation) that is mathematically generated and uniquely idenifies an application, or collection of data.

MD5s are typically used to verify the correct transfer of data or to positively identify an application.

MD5s have become very popular as no two MD5s can be the same. MD5s are used as "signatures" or "fingerprints" for software applications.

Or in some other words, MD5 hashes are coded passwords.
Neopets codes user's passwords and stock them into their servers for safety.
Try this site if you want to crack them:
GData: An Online MD5 Hash Database

And for other informations check wikipedia.
MD5 - Wikipedia, the free encyclopedia

[Wolf08]

Seriously these are getting annoyting because they are always from people who are brand new.

Use the search forums option on the side. ACTUALLY look through threads that are not just on the first page. There are tons of gudies on this etc.