Since Robert received the spam at his sourceoftitle.com email address, it is likely simply a case where the spammer auto-populates the spam with the domain names in the email addresses which he's gathered.  If that's the case, then nobody else will get this spam.  We've gotten no reports that anyone has gotten this spam so far. 

Nobody has gotten into our database to our knowledge.  It is also somewhat unlikely that our forums will be culled by spammers for email addresses, since the email addresses are only visible after registering and signing in.  Spammers typically gather the low hanging fruit when they "harvest" email addresses-- using "bots" to crawl the internet and collect email addresses from generally available web pages.  They can't get your email address from our forums that way.

Anyway, this is probably nothing to be concerned about.  It's a case of erring on the safe side.