doing a search on a record doesn't make your credit rating worse/better. the number of searches has no bearing what so ever.
Yes, yes it does. Hard searches, such as those you get when applying for a credit facility of any kind will be have a negative impact if there are too many in a short space of time.
e.g. let's say i start a new job earning very good money but I'm on probation for 24 months. i would fail to get credit because the job isn't as secure as it could be.
Nope, they have no employment information about anywhere you've ever worked.
if you only make the minimum payments that isn't exactly good either.
Again, they don't know if you've made the minimum payments, half the balance or the whole balance each month, all they know is that your account was "satisfactory" for that month.
if you pay in full all the time that would give you a good rating.
Only gives you a good rating in the sense that your credit utilisation would be lower.
However this is catch 22 as if you have a lot of available credit, some places see this as a risk as you could just take it all out at once.
Common thought is to have about a 20/30% utilisation ratio of available credit.