How can I find what it is and if I need it? I could release some space if anyone can help, here is the email from Hostgator thanks guys:
As per our conversation here is the information I have about your database.
In Database XXXX1209_wrdp6 you have a section called owa_domstream and its current size is 2.7 gigs
This db table is tracking customer behavior (at the mouse movement level) and can get pretty huge. The suggestion is to turn off downstream tracking if you don't need it and to wipe the data out of the table when it over-accumulates.