We've now updated our signup for new users so that you can get a WordPress.com account without a blog being created. People have been requesting this quite a bit. This could be useful for a couple of reasons:
- If you wanted to leave comments on blogs that require sign-in
- If you read a blog that uses our not-yet-released members-only feature (hint)
- If you are a writer on an existing blog, but don't want a blog of your own
- If you just want an API key
I personally think multi-author blogs will benefit most from this. If you get a regular account sans blog and decide you want a blog later, don't worry we'll hold your sub-domain for you.
This is part of how a WordPress.com membership is evolving to be for more than just a blog, which is something we didn't quite anticipate but is a pretty fun development nonetheless.