I copied and pasted because 6 shooter had it well said, I am not sure if this was already cleared up, but I can't seem to find anything on the topic.
Comment by 6 shooter posted on 04th Mar 2009:
I spotted an inconsistency on the GTA4.tv site:
1. The above friends guide is listed under Guides on the main site. It states that 6 friends are necessary for 100% completion, namely:
- Little Jacob
- Liberated Woman
2. The 100% Completion Checklist on the main site states however, that in order to get 100%, you must only complete all activities and unlock special abilities of the first three friends on the list: Little Jacob, Brucie and Packie.
I assume that the latter is true and there is a mistake in the friends guide. Correct me if I'm wrong, otherwise I believe that Friends Guide needs to be altered.
Also, an additional question from me: do I get 100% even if the by the time I get the last other thing needed for 100% one of my friend's ability is no longer available (because the level of "like" drops really low) ?