The biggest issue is when guys use new incoming female employees as dating prospects because they don't meet females elsewhere. They may be nice and friendly but I don't want to have to shake off and turn down 6 guys who are fighting to get at me first everywhere I work, its really not ok. It happens at every place I've ever worked and watch the same guys do it to new girls.
They are here for a job, not to supply you with intimacy. It's even more sad to think about how much these women are not viewed as great additions to the team, but how likely you are to get a date with them. It's very frustrating.