Boogers. I have an $800 boogermaker. 
I’ve got the extruder extruding with light pressure, I’ve got the head just barely touching the bed when it starts, I’ve got Slic3r printing the first layer at 205 and everything else at 200, I’ve taken Rubbing Alcohol to the blue tape based on a youtube video I found…What am I missing? I’m hoping there’s someone out there that’ll look at it and say “Yup, you gotta misaligned flanger.”
So it extrudes fine if you push the filament through? Have you checked your extruder to ensure it’s gripping the filament tightly and not just scraping it out? Doesn’t look like you’re extruding anything at all. If you can push the filament through fine, the problem is likely in whatever is pushing the filament (the “cold-end”)
Will it extrude into air, when an inch above the build platform?
You are close but not quite enough … You are using Slic3r so under the printer settings tab enter a negative value for 'Z offset. I suggest trying -.05 mm to start and try again. When it starts to crease the tape you’ve gone too far.
I try to get mine to sort of smear the first layer a little for a good adhesion.
It’s manually extrudes perfectly with the nozzle in the air, extrusion happens with no stripping or binding…the values may need to be adjusted, but they’re in the ballpark.
I’ll try the negative Z offset after dinner.
You could also try a second layer of tape … my blue tape mikes’ at 0.1mm
A pop can cut into a shim as a feeler gauge is what I have been using lately. Cleans off easy and caliper tells me it is exactly 0.1 millimeter. My layer height of choice lately has been .15 mil… So I get .05 mil of squish.
Is the fan by the nozzle running on the first layer? If it is, turn it off.
Temperature: was roughly checked with a non contact thermometer.
Fan is on an always on source, I’ll have to research where to run it to control it.
I never get good adhesion when I run the nozzle fan too early, especially with ABS. The fan causes the layers to contract a little when cooling causing it to lift right off the bed.
This is makerbot brand PLA…turns out some of my initial headaches stemmed from unintentionally getting ABS for Xmas. I’ll use it eventually, but it really had me scratching my head as to why I was getting the results I was getting.
I never use the fan with ABS. Can you control it with G-Code ?
Slic3r has it under filament settings.
Apparently not, I sent M106 S0 and M107 with zero results.
What printer, controller and printer software are you running ?
I don’t know if its the video playing a trick on me, but it looks like your nozzle tilts a little towards the direction its moving. Which would make the trailing edge getting to low and removing the applied material.
Or you might be under extruding the material. Have you measured the filament movement?
I’m done for the night. Gah.
Okay, here’s some specifics:
Hot Ends.com J-head extruder
3DR (Rich Rap’s design) printer with a bowden extruder
Firmware settings are for 55.5, 55.5, 55.5, 160 for the motors.
1.75 PLA
Running at 200 degrees.
RUMBA controller…aaaaand I think I just figured out something (see below)
If you set Repetier to extrude 100 mm at 200mm/min, it extrudes FANTASTICALLY. Really, if I could figure out the settings to do THAT while it’s printing, things would be golden.
I was printing the round token for calibration and wondering why all of the lines were so far apart. I think there’s a mismatch in steps/mm…The RUMBA has Jumpers in one orientation, all of the documentation shows dip switches in the other direction. I think it’s set to 16 microsteps per step as it’s the one that makes the most sense. (100 is 16 microsteps 001 is 1/2 step)
Grrr. I’m really frustrated, but based on that info, I wanna go back in the ‘lab’ and power it all back up.
Stick with it ! You are so close after coming so far. I can’t profess any knowledge of your hardware but I’m sure somebody here does !
I remember the frustration of these first days, that’s quite a hurdle. All is assembled and it should work but does not. Eventually it will!
Eventually finding out what’s wrong and making it work like it should is about a third of the fun, which is a lot 
Is the hot end too close to the bed? I found that if I get mine too close there is not enough space to extrude and you are basically blocking up the head. Try it a little higher.
I have also recently had a problem with the filament getting too moist. Make sure you keep it dry.
Good luck.