I don't want to get in trouble for posting the host name, but it is one that wordpress has listed in its recommended hosting page.
It's a mulitsite. When it hit 100 tables they emailed me. I moved a static site over to wordpress and did a lot of plugin playing at first - they left a crap load of unused tables behind after I deleted the plugins I didn't care for or need. It was a pain the in arse to find the unused table but I did and brought the count way down.