IWM Dividend: Small Change — For Now

My Russell 2000 ETF (IWM) is paying a $0.15/share dividend tomorrow. I currently own 4.1689 shares of IWM, so I will receive approximately $0.63 in additional fractional shares of IWM as soon as Sharebuilder credits the dividend to my account. At an approximate price of $79.22/share, this would give me an additional 0.0079 shares of IWM, upping my total number of shares to 4.1768. While this certainly isn't a large sum (in fact I might describe it as small change), it is fun to think about how much return that $0.63 will yield over the next thirty years. Plus payday is coming up, so I am looking forward to making my Roth IRA contribution here in a couple of days.

I'm still wrestling with the idea of adding one of the dividend ETFs into my portfolio in addition to my holdings in SPY, IWM, and EFA. If anyone has any thoughts on this question, please post them in the comments. I'd apppreciate the guidance here. Thanks!