I love to SMS! I'm just wondering if you have any 'rules' when it comes to SMSing.

I hate it when people don't reply to birthday messages! I always do, but lately I've noticed less than half actually reply to them.

I don't expect a reply instantly but waiting too long for an answer annoys me. If it's over a couple of hours I assume they're not going to respond.

I'm a fan of the 1 word sms. I know many people aren't but for me, writing OK or thanks is my way of acknowledging the sms. I don't do this with joke sms's though.

I like joke sms's but not all the time. There is one particular friend of mine who only ever sends joke sms's. When I see her name pop up I just know it's going to be a joke. I get at least 3 a week from her. I never forward joke sms's unless I think they're worth it, which often they're not.

Do you have to explain why you took so long to answer an sms if your phone was turned off or flat?