During the past week of business travel my indoor plant starts have grown with the vigor of youth into a verdant and slightly unruly bunch of tweens.
The tomatoes from my saved seed are particularly in need of thinning. I seeded them a little more thickly since I did not know what my germination rate would be. While they initially lagged about week behind fermented seeds I purchased this year, the germination rate for my saved seed looks to be close to 100%.
Pro Tip - always use scissors to snip off the plants you are thinning to avoid disturbing the roots of chosen specimen.