Hello,
I started a Wiki for customizations, but haven’t had a chance to really get to finishing it. But there is really a lot you can do here.
https://github.com/themeblvd/Tweeple/wiki
In the default template function for displaying Tweets, the part that displays the “meta” info below each Tweet is a hooked function that you can modify, and I actually a function in the plugin that displays a little more info, not being used, that you can hook in.
So, from your own plugin file or theme’s functions.php, you can utilize this already existing function like this:
remove_action( 'tweeple_tweet_meta', 'tweeple_tweet_meta_default' );
add_action( 'tweeple_tweet_meta', 'tweeple_tweet_meta_fancy' );