Herp Heaven, although we are all friends, you must remember that the majority of this forum is educational or scientific.
As moderators we discussed that we would not be as strict regarding these mistakes that you mentioned (capital i's) in the "casual" parts of the foum like "General Discussions" or "Fun and Games", but in forums where it matters, we'd prefer you keep the standards up.
As with BV's example above, not using a capital could change the whole meaning of your sentance.