You could use Bitcoin crowdfunding services like https://bitcoinstarter.com/ or http://coinfunder.com/browse or even both of them for that purpose 
That would also attract more attention to Bitmark itself.
That would also attract more attention to Bitmark itself.
I wholeheartedly agree, to reach out to other communities and bring people in is always our primary goal.
We do not want to become a community of people swapping money between ourselves, it is clear where that ends up.
To bring in one potential adopter or somebody to the discussion, that is as more valuable than any funding could be.
If you would bold and state it that for example 20-30% of donator fund would be used for mining Bitmark and he/she would get them in return then it wouldn't be just a fund, but also an investment.