Implement intent receiver for instant messaging URIs (imto://aim/username).
The default dialer for Android from Google uses instant messaging URIs such as "imto://aim/username", "imto://gtalk/username", "imto://skype/username", etc. to invoke instant messaging apps. The problem is, most apps do not implement URI receivers. So, when the user clicks on a contact's AIM username, nothing happens at all. If implemented, receivers for both URI schemes "im" and "imto" would likely get the best coverage by calling apps.