The internet is not the best place to ask for investment advise.
Dogecoin will prosper it has great community the block reward will half again in about a weeks time so miners will have less to sell. In the last couple of weeks and months only people believe in the coin bought, so a lot of coins are in strong hands. Fees are a much smaller then bitcoins and confirmation times are much faster. A volume like yesterdays (only on cryptsy 7 Billion coins changed hands, plus all the other exchanges) will not be unnoticed by the larger exchanges and its only a time one will added the coin.
Also check out: http://www.reddit.com/r/dogecoin