By growth fund I meant keeping a portion of dividends to buy more equipment and growing the company. I didnt mean holding shares which is worse than just holding bitcoins. Besides, you would be better off buying back your own shares than investing in other companies.
I don't like the idea of keeping a portion of the dividends. I would like to continue to pay out 100% of the coins mined by this operation to shareholders. Each shareholder could choose to use their dividends to buy more shares on their own if they so please, thus putting this decision in their hands.
I wish glbse let you reinvest automatically by letting you own portions of shares. Unless you get enough dividends to actually buy a new share each week you can be waiting a long time to reinvest into the company.