199465 modifications needed

Few modifications needed for a flash arcade. Rating system (1-5 stars) and need to incorporate it to the existing system. Ranking games by rating, displaying rating scores along side game thumbs etc. Comments Users can comment games. Spam filter, image verification. Filter list of banned words. Has to be done so that not every vote is stored thus db doesnt get clogged with 10s of thousands of entries. So something like x1+x2+x3...+x/n = y , but always adding up the previous scores together. This should be done in an ajax app, so users can choose between displaying related games, popular games, best rated games or comments without having to reload the page. Share/bookmark buttons and fields. Facebook, Live Messenger, Favorites, Google Fav.. and copy and paste fields for embed flash and link to game page. Feel free to ask questions Programmers with references are preferred.