I guess it depends on screen resolution and font size, but when you have a lot of away messages in your awayrc file, the list simple runs off of the bottom of the screen. At 1600x1200, more than 56 away messages will not fit on the screen.
Possible fixes: A more interactive away message selection dialog; similar to the View/Edit/Delete away message dialog (but smaller) in TiK Preferences.
Folders and subfolders for away messages, similar to bookmarks in a web browser (ex: Quotes, Poems, Jokes, etc.).
Possible fix: Don't use more than 56 away messages. That's ridiculous. TiK development doesn't need to bow down to every user variation that might exist, this one is definitely overboard.
I didn't say it was important... 800x600 is a very reasonable resolution. With the same font as mine, that's 28 away messages, and a larger font might take up more room. Please forgive me for getting sick of my away messages after a day or three...
We'll have to think about this one. In the meantime, it's going to have to be a low priority.