I've been using Google mail (gmail) for years. Obviously, I use picasa also to store my photos. Currently, I am having a problem with my (mostly email) accounts. It almost reaches the 15 GB limit.
I use my gmail as my main communication media. Students sending assignments are kept in my mailboxes. Every semester I have betweet 30 to 100 students and I've been teaching more than 15 years. The storage is definitely becoming a problem. What bugs me is that I have only 8000 (or so) mails in my mailbox and that has reached the maximum free storage capacity.
What to do? Delete emails? Or, should I upgrade the free account to the paid one?