Since I post a lot of my Photobucket stuff that has to do with lolpics (there are some pretty funny Trek and Doctor Who ones) and also use it to host the graphics for the forums I run, I have to make absolutely sure I don't exceed any restrictions. And even though Firefox has some excellent add-ons that take care of the annoying ads, I don't always have the choice to use Firefox.
All around, I've never regretted having a paid account. And it just may give me a little push in being noticed when I complain about the beta and how they "fixed" what wasn't broken in the first place ("you messed this up and I'm paying
for this mess???!").
No business wants to alienate the paying