You better modify your tables not using default NULL for share_count & stale_share_count
alter table webUsers modify share_count int(11) default 0; alter table webUsers modify stale_share_count int(11) default 0;
Otherwise new users won't see any shares in the Top 30 Lifetime Shares table. For me it is showing 0 while I processed a few hundreds shares. I think it will scare new users.
Current users can be modified with update webUsers set share_count=0 where count is NULL; update webUsers set stale_share_count=0 where count is NULL;