Generally I really like the idea, the 100 AAPL shares limit is of course a bit tough (trusting you with ~a good motorcycle worth of BTC is a lot), maybe you can work on that somehow.
Also as mentioned you'll need a fast bot that pulls prices from wherever AAPL is denominated + MtGox and prices your shares accordingly.
Maybe you could offer different stocks (that pay out dividends more regularly than Apple) or bonds/options as well? Also some that don't cost ~100 BTC a piece would be nice...
100 shares is just if you want to trade in the glbse asset for the AAPL shares themselves, or the dollar equivalent from me selling them.
As some here have pointed out, by changing to interactive broker I might be able to handle smaller lots (but there'll be more overhead).
And I wouldn't offer them for 100 btc a piece - I'd like to offer at much lower prices so smaller players can participate. So there would be X glbse shares corresponding to 1 AAPL share. Thus you could get on board for a bitcoin or less.
I don't have any other shares currently, but I know of others who are interested and doing similar offerings with other shares, if we can find a working model here.
As for how to do the pricing - it depends on how much interest there is. I'm thinking offering this in portions, so that when I offer N shares they'd all be bought at the same price, and after that the market would be pricing them (using bots, or simply taking a longer perspective - I've held these shares for a long time and haven't cared about price fluctuations, or the USD vs my native currency. Still it's worked out extremely well so far)
Regarding dividends - of course they're going to be puny compared to what's the trend on GLBSE these days. People never bought AAPL for dividend anyway. I just mentioned them because of course, if I sell the stock on GLBSE, the asset holders are the ones entitled to the dividends. Also, just because I'm offering them now, I might still trade in them later on - I'd just rather trade in bitcoin than usd.