Online Uno Strategy

I've been playing Uno on XBox Live Arcade recently and I've begun to pick up some good strategy tips that maybe you havne't thought of. Uno is very much based upon luck, so I wouldn't go assuming any strategy will let you win a lot more often, so the best you can do is put yourself in the best possible position to win. Here are a few tricks I've learned:

• Save your wild cards: Unless you absolutely have to; do not use them. Save them as, hopefully, your last card to make sure you can go out on anything.
• Try to keep all the colors in your hand: There are four card colors, so if you have 4 cards left you want to try and have one of each in your hand (if at all possible).
• Do not keep duplicate numbers: As you know, using the same number that is already on the discard pile will let you change the color from blue to green or whatever. If your hand has 2 8's and an 8 is on top, even if you have that color, drop the off color 8, especially if the colored card is the last one you have. For instance if you have: Red123, Blue45, Green 4 and the card on top is a green 4. Drop the blue 4, not the green 4. Keep your colors in tact, but get rid of  the duplicate numbers instead. Give yourself options, both colors and numbers for later in the game.
• Challenge Uno: It's not nice; but if someone forgets to call Uno, call them on it. Make them draw two cards as a punishment. On Xbox Live Arcade, when I see someone going down to 1; I'm hitting the Y challenge button immediately so even if the next player acts quickly, you got the non-caller.
• Drawing Cards: If you do not have a card to play and are forced to draw from the deck; do not play the card you draw, even if its eligible. It tells the other players that you are still lacking that color and inspires them to either reverse play to make you draw again or keep the color the same for another go around. Especially do not play any wild card you draw. Always keep that card.

There may be other tricks as well, but these seem to work well for me and let me win a decent (meaning 30% - HA!) of games. Dumb luck still rules in Uno, which is why it's fun; but put yourself in the best possible situation to keep your average (in a 4 player game) above 25%.

 Good luck!