Just to clarify, it shows your followees, as in the people you follow.
It currently shows up to 100 followees because I use a single twitter API call. Some of the tweets being empty is probably because that call is deprecated (and would have to be replaced by two calls). Given their whole API version 1 is now deprecated, replaced with auth-requiring 1.1 that would break the simplicity of the current app, I didn't spend too much effort on polishing it.
However, feel free to open an issue, if enough people +1 it, I'll try to fix it sometime. :)
Shameless plug: if you'd like to see all the people you follow with their single latest tweet, try my little experiment:
http://shurcool.github.io/latest-tweets
It works for public lists too, just write username/list. The more yellow the tweet, the more recent it is.