I have a legacy lifetime account so I won't experience any billing glitches, but I've had no problems with any other features. I use it most days and haven't experienced any problems.
Frankly, the stability of the service is what I like about it.
Frankly, the stability of the service is what I like about it.
I pay for the archiving service partially to support Pinboard because I want it to stay solvent, partially because it soothes me to know I can refer back to websites (at least the page I archives) that I found valuable in the past.