I'm pretty conservative for the first week till I'm indexed and I know new links beyond the first one has been found.
I usually do 5 or 10 when I'm done the site, wait till I see googlebot - then I'll do a hundred or so a day or so later.
Week after that I'll set up shit on auto pilot and just sit back.... or if I need to I'll do a big burst so the rankings improve.
(Assuming your not talking shit like directory listings where when you submit 200 you end up with them slowly being approved anyway.)
I usually only revisit a site every 3 to 6 months for more links or content once I'm done that initial burst of activity anyway - so I'm abnormal.... but it works for me.