My websites have been growing at a steady pace and for a while I was receiving server error messages due to too many connections. I've purchased a virtual private server through the same host provider and the messages have stopped although I have not migrated any of my sites to the VPS. Interesting, right? When did those of you whose businesses have grown beyond what shared hosting can provide make the decision to incur the additional cost for space and bandwidth? Is there a normal rule of thumb for when it makes sense to make the change and how easy was the migration?