Rated 4 out of 5 stars
WebMail Notifier v2.9.13 (on Firefox v16.0.1) is one of my two or three most valuable add-ons: it serves as my gateway to internet communications (Comcast mail, Yahoo mail, Google mail, Facebook, and Twitter).
Alas: WMN access to Twitter suddenly stopped tonight. Perhaps a new update to the Twitter script is necessary. It must be exasperating trying to keep up with all the changes made by all these different sites. Keep up the good work, though; hope to get Twitter back soon.