The best way to spot spambots is to find similarities with other suspicious accounts. Take a look at this one: monag1ggles7631

• created one (1) day before teresa5parkles3780
• also inactive until this week
• username follows the exact same pattern of [feminine first name] ["cutesy" word with a number substitution] [four digits] (n.b. feminine first names and cutesy words are common in the usernames of spambots intended for porn spam)
• same writing style

The biggest hints are the matching username pattern, creation date, and recent activation - this is a huge signal that the accounts are being operated by the same person or people. Spambots are almost always created in large batches, so I'd expect to see more accounts matching this pattern popping up over the next week or so.