Want to invest in bitcoin but willing to accept more risk for more return? Maybe investing would be right for you!
As we all know, companies such as AsicMiner are currently kicking butt with their asics by releasing the eruptor blades and Erupter USB sticks for mining. This combined with their 28% or so of total hashing power for the entire bitcoin network is resulting in fantastic growth over the past few months, and their dividends are doing quite well. If you are interested in shares of AsicMiner , check out either Direct Shares or Pass Through shares, which is just one share of AsicMiner. You can find them in auctions on bitcointalk as well as sites such as BTCT.TO
There are other shares too, such as AMC which just recieved a few Avalons they purchased a while ago. Keep in mind that the owners relations with others on the forum is quite poor and very unprofessional, so I would still consider it rather risky.
There are also companies which are not based on bitcoin but experimenting with it as a source of capital, such as KenilWorth on bitfunder, who are a mining company which finds raw material deposits and then sells them to another company (I think). The people with that company are VERY responsive on bitcointalk and seem to be very professional.
You can even if you wish bet on funds which are reliant upon BFL's shipping, such as HaveLock's Investments Mining Fund. The owner of that fund is also rather response on bitcointalk and is a very down to earth person from what I have seen. For example, they just purchased a single Jupiter rig from KnCMiner in an effort to diversify so if BFL fails they will not be destroyed.
They are also other funds out there which are designed to represent an amount of Mhash/s per each share, for example RedStarMining which aims to have 180 Ghash/s eventually, with each share containing 2.818 Mhash/s.
Also, a very cool thing about these funds is that they are very present on bitcointalk in the securities section, so you can see up to date discussion about each fund. For example, for red star mining, here is their thread: https://bitcointalk.org/index.php?topic=63257.0 You can even get a fund in an exchange, such as Crypto-Trade! Though, they seem to be having some major issues with their site for a while now, which is unfortuntate.
There are tons of such securities available for lots of different styles people could choose, and because of bitcoin buying these shares is a very painless process. But do keep in mind that this is riskier than just holding bitcoin, and there are a good bit of scams prevalent in such securities, but if you keep an eye out and read their associated threads on bitcointalk you will be for the most part safe. Also, investing in companies like AsicMiner increases the network hash rate, making it even harder for a single entity to barge in and get more than 50% of the network hash rate, resulting in an even more secure network! These sometimes even hare shares which cost less than five dollars, so to get started you don't need much BTC at all. And here is the link to bitcointalk for anyone who wants to do more research and look at any other funds which might be of interest. Don't forget that there are some funds which are not exchanged on these sites, for example group buys where each buyer holds a certain percentage of proceeds from a very expensive miner they pool together to buy. As earlier though, be careful.
There is also a really good subreddit for discussing these securities as well as others on /BitcoinStocks ! Edit: Added in bitcointalk threads for each security I listed. Edit: It seems that there are nearly half as many downvotes as there are upvotes. Can anyone clarify?