Ok I decided to start to compile a list of sites where alt currencies are used / accepted or links to the github source code for apps and plugins that are available, I will add peoples sites if you post them below and I will update and maintain this list as well (or as best I can).  If people like this thread and request it to be made sticky then saltyspoon can you please do so but feel free to wait till a decent list is compiled and agreed upon.

Trading exchanges:
Vircurex - https://vircurex.com - Trade BTC / LTC / NMC / DEV / IXC / PPC / SC / TRC
Bitparking - https://exchange.bitparking.com/main - Trade BTC / LTC / NMC / PPC / TRC (note url change for each exchange eg https://ltcexchange.bitparking.com/main)
http://exchange.zapto.org/ - Trade BTC / LTC / PPC / NVC / TRC / NMC
BTC-E - https://btc-e.com - Trade BTC / LTC / NMC / NVC

BlockExplorer:
http://www.cryptocoinexplorer.com - I can't praise this site enough.... this is such a key and fundamental part to any coin with a blockchain and the developer of this site has adapted the code to run for PPC, TRC and FRC .... So please if you want to only make one donation in your reading here then do to HIS addy BTC / TRC / FRC : 1CRypTosugXcXQNjp16Cra83c3M24vVW9Y as it costs him $$ to host the site


Litecoin (LTC)
Litecoin Homepage - http://litecoin.org/
Source code in the github - https://github.com/litecoin-project/litecoin

BlockExplorer: http://explorer.litecoin.net/
Wiki: https://github.com/litecoin-project/litecoin/wiki and http://wiki.litecoin.net
Dedicated Forum: http://forum.litecoin.net/

Investment:
Crypto stocks - https://cryptostocks.com/
Litecoin Global Exchange - https://www.litecoinglobal.com/

Faucets:
http://ltcfaucet.com/
http://coinofmidas.com/litecoin/

Gambling:
Satoshi dice and other gambling games - http://satoshiroulette.com
Dice games http://diceoncrack.com/
The original BTC lottery for LTC http://taabl.net/
LYC-Play - http://www.ltc-play.com

Services:
http://liteaddress.org/ - online and offline wallet generation

Spend your LTC:
Clothing line is also accepting LTC - http://The420Life.com/
buy VPS using LTC - https://crowncloud.net  Drop in an email and we'll accept LTC orders
buy VPS using LTC -http://koddos.com or http://kovpslayer.com email us and we will accept BTC and LTC
Gift Cards and more https://litebit.co


Peer-2-Peer Coin (PPC)
PPCoin Homepage - http://www.ppcoin.org
Source code in the github - https://github.com/ppcoin/ppcoin
Dedicated Forum: http://ppcointalk.org/ - Posting has been disabled due to spammers but work in progress to migrate to better platform

Gambling:
Satoshi dice and other gambling games - http://satoshiroulette.com
Dice games http://diceoncrack.com/

Namecoins (NMC)
Namecoin Homepage - http://namecoin.info/
Source code in the github - https://github.com/namecoin/namecoin

Info on NMC and how to register .bit domain - http://dot-bit.org/Main_Page

Terracoin (TRC)
Terracoin Homepage - http://terracoin.org/
Source code in github - https://github.com/terracoin/terracoin

Faucet: http://coinofmidas.com/terracoin

Online and offline wallets - http://www.terrawallet.com/

Gambling:
Satoshi dice and other gambling games - http://satoshiroulette.com
Dice games http://diceoncrack.com/
The original BTC lottery for TRC http://taabl.net/

Devcoins (DVC)
Investment:
Crypto stocks - https://cryptostocks.com/


Rucoin (RUC)
RUC Homepage - http://rucoin.us/
Dedicated Forum: http://forum.rucoin.us/
Pools:
http://pool.rucoin.us/ - SHA256 PPLNS pool by hashy
http://spool.rucoin.us/ - SCRYPT PPLNS pool by ^^


Soon: Novacoin (NVC)
novacoin.org - soon
explorer soon (i believe that im gonna make it)
forum soon - up with the site
faucet soon
pool.novacoin.org -- PPLNS pool by hashy

End with an old site that still running and showing stats for a LOT of altcoins http://www.cryptocoincharts.info

Thanks to Coblee and nethead for their inputs

Nothing wrong with the Litecoin github page.

Some other Litecoin sites:
explorer.litecoin.net
wiki.litecoin.net
liteaddress.org

I know am real new to this all. But what about ixcoin and i0coin being on our list?

Missed these excellent sites:

Christian's CryptocoinSend: http://www.cryptocoinsend.com/
Andy's PPC Charts: http://www.proofofstake.com/
dust's real time mining profitability and market cap ranking http://dustcoin.com/mining

Check my wiki for updated list for PPC:
https://github.com/ppcoin/ppcoin/wiki/List-of-services-on-market

and this one http://www.crypto-coins-table.com