On another thought, some recruiter do spend time on an introductory call with me, they appear to be studying my background and qualifications and do send few interesting jobs initially, but then, almost always, something horrible happens and they start sending my way every single job they've got. At that point, I just stop responding to these individuals and send their emails straight to spam (hoping it will train the filters correctly, but wondering, how many legit opportunities were missed simply because they got stuck in spam box). I'm hoping recruiters are reading this post and draw conclusions. But that was my original question -- perhaps, they (the recruiters) are doing so great these days, so that they simply do not care.
That's another thing I have thought of adding for myself, notes on the recruiters. Some are really good and stay that way. Some start out good and fizzle like you have described. Some suck from the very beginning. I would love to be able to track this and give preference to the good recruiters and agencies. Much like a reverse CRM.