Well, we're kind of a family of steps!

My grandparents divorced - grandmother re-married twice. Grandfather once - Gu - more grandmother than my grandmother - last saw her 13 years ago at my fathers 4th wedding - I have one step sister from his 2nd marriage, 2 stepsisters and 1 half sister from his third and a half brother from his 4th!!! Haven't seen him since my sisters wedding 7 years ago - but did get a birthday card from him today!!

Had a step father (and another step sister and two step brothers) for a while - but he left 2 days before christmas when I was 12 (also my dads birthday!)

My partners parents split when he was fifteen - it later transpired that she'd been with the bloke for 10 years! They've been married now for 13years - he's Brian to some of the grandchildren and for some he's grandad brian.

Grandparent wise a grandparent is no different to step grandparent as I see it - just a bonus!

It can be a bit of a minefield out there but I just think so long as both parents sing from the same songsheet as it were and the kids get ample chance to have their biological parent to themselves then a step parent is a bonus too!!! Think it also depends on the overall circumstances - is the other biological parent around too? Do they have a partner too??? All of these things impact on it!