The problem I have seen with 'perpetual mining 'bonds'' is that they have a fixed hash rate per share. They will perform well at first (ie now) but there is literally no way to maintain the dividends as difficulty increases which reduces the price that other people are willing to pay for that share.
I have seen many 'bonds' listed without clear information on how the initial investment could be repaid trading at above the face value.
It's really important to read everything you can at this stage and if there is something you don't understand, look up the term or ask someone.
I am still in this learning stage (hence this shameless newbie post!).

I noticed earlier in this thread that a quiz might be a viable option; this could be implemented for the first few (or few dozen) posts by new accounts.
This would probably not help with duplicate or sock puppet accounts though.
I just wish I'd bothered looking at the sign-up terms before I stared lurking because i've racked up days of reading, not just hours!