Peter- you better hope that phone does not stop rigning! If if does you have a real problem! Ask the thousands of high tech workers from 2001 -2004 that were laid off and unemployed for months in the Valley, and elsewhere. Especially, and specifically, software engineers! I know in my specialty analog engineering, is was not as bad for them, but many were also let go. Purely from a recruiting perspective yes "Linked-In" is one tool that we use but there are many others. Elliminating your profile from Linked In will not stop quality recruiters from finding you. In my space I am probably the most known guy, but by all means I don't know everyone in the industry. I think what is most important is to accept the fact that your skills are in demand right now and seize the moment should one of those unwanted calls uncover a far better opportunity than your current job! Every recruiter realizes that a "not interested" response is normal and perfectly acceptable. You should listen carefully to every pitch and understand that the recruiter will fill the position and whether it is you or someone else does not matter. The only potential loser is you, should you not listen and dismiss what could be a opportunity of a lifetime. I could point you to several hundred analog engineers, and Executives I have placed that have become multi-millionaires, many of whom took that unexpected call. I hope this sheds some light on those seemily annoying calls!