I am happy to hear that one can be a developer and understand TCP/IP and not be a "techie" since the dimunitive nounized form of tech, "techie", always has a condescending air about its use. Likewise "coder" and often even "geek". When my partner stays up all night reading wikipedia I can humorously say "Looks like you had a major geek-out session." This is taken in a very different sense than when a touring MBA says "So is this the cage where you keep the geeks?"