I consider myself to be something of a writer. I haven't really written a lot lately (not since I went to Uni in fact, must be because I need to actually think now), but to clarify:
In the second to last or last year of secondary school, we had to take a test for English (which isn't our primary language, at least for those that didn't grow up with Star Trek on the Beeb) that involved having to write a short piece of prose. To prepare, we had to write another short story first. We could choose between two predetermined titles (like on the test), and we had a word limit (250-400 on the test). However, on the preparation story, the only "word limit" was "minimum of 250 words". Most people struggled to get to 200. I handed in a 9-page sci-fi short story of a smidgin over 4800 words, that I wrote in one afternoon sitting.
So yeah, I consider myself a writer.