Where DON'T you use Seesmic?

I assume, since we're all in a social network called "Team Seesmic", that we use Seesmic for most of our tweeting needs.  However, let's share the situations in which we DON'T use Seesmic, either because it's not possible to do it or because there are better options available.  Who knows, some useful information might come up for Seesmic's product team?

In my case, there are two main situations where I don't use Seesmic:

• Tweeting from my aging Nokia phone, which runs Symbian (hopefully this need will go away as soon as I can get my hands on an Android phone);
• Recently, stuff that I post to my Posterous blog gets tweeted automatically, so naturally that doesn't go through Seesmic.

These two cover about 90% of the cases for me, the rest being stuff that gets sent out from other services such as shared items from Google Reader.

Post your comments, let's see if we can come up with some insights for the Seesmic product team!

P.S.: I'm guessing iPhone will show up a few times on people's lists...