So, does anybody have any constructive criticism for my letter? I found that I always write bad grammar and spell poorly.
"Bitcoin" should always be capitalized, as it is a proper noun.
the bitcoin community appreciate
I would say "appreciates", but this might be a difference between US/UK English.
your ongoing effort
I would say "efforts".
such as internet netruality
Spelling: neutrality.
Internet needs to be capitalized.
(Also, I for one am opposed to net neutrality legislation.)
monetary system called bitcoins
The system is called Bitcoin, not Bitcoins.
It have extremely low transaction cost, is hard to produce, and is hard to fake and as well many other property that make bitcoin a good money.
In addition to many other useful properties, Bitcoin has extremely low transaction fees and is hard to produce and fake.
centralized monetary system,
systems
whom are often backed by governments.
which are often...
Members of the bitcoin community recognized government's interest in keeping their monetary monopoly and their resultant actions as possible threat to the growing bitcoin economy.
Members of the Bitcoin community have recognized the interest worldwide governments have in keeping their monetary monopoly. Their resulting actions could be a possible threat to the growing Bitcoin economy.
As, such,
As such,
would like to donate our goods, the cryptocurrency bitcoins to you.
would like to donate some of our goods -- cryptocurrency bitcoins -- to you.
All together combined are X bitcoins, which are worth in total, X USD.
Combined, this is X Bitcoins, which are worth X USD in total.
The EFF is free to convert bitcoins to other currencies at will, or buy goods and services with bitcoins, or simply do nothing with it at all. We, members of the bitcoin community hope that the EFF will put the donation to good use.
The EFF is free to convert the Bitcoins to other currencies, buy goods and services with the Bitcoins, or simply do nothing with them at all. The members of the Bitcoin community hope that the EFF will put the donation to good use.