One popular startup has been emailing me every couple days since I signed up a week or two ago, asking me if I'm having trouble getting started and suggesting some simple ways to start using their service today. That's great, but I have already started using it successfully.

Every time I get a new email I start to draft a "please don't bug me about this any more" reply, but I decide not to send it because I don't want to get on the radar of their sales staff. The only email I hate worse than spam is email from salespeople.