I'd say my biggest complaint is that they don't bother to look at my actual skill set. All to often I get posts that are clearly for a back-end web developer or even worse, a software developer.(I'm a front-end web developer for reference) I get that it's a numbers game and they're emailing hundreds if not thousands of developers. It's just spam though if it's an opportunity for a job I don't do.
This, 1000 times! As someone looking for entry level work, this irritates me to no end.
We're a place where coders share, stay up-to-date and grow their careers.
We strive for transparency and don't collect excess data.