I started around November last year (oh you might wonder why).
I found it good to keep running in the background, if a little bit of an internet hog. I've banked about 10% of this site here, though if I didn't have a setback and a pause on it I'm sure I'd have more. Going to restart it to collect more soon.
I've seen people set up their own local booru, though I've not done that myself.