For about a week, it stopped working and I could no longer add my presentations. I'd begun to rely on it, and suddenly it was letting me down (it is in beta, so lets not be too harsh, and it is a free service!).
I vented my frustration on Twitter saying something like "I will never use SlideShare again, it won't let me upload anything and I can't see where to contact anyone". Within a few hours, SlideShare were following me and also asked what was wrong, how they could help and pointed me to their "contact us" link that I couldn't find. I explained my issue via Twitter and they explained what the problem was.
What they achieved?
Me actually bothering to go back to try the service again, and when it still didn't work, I decided to leave it for a week and see how it goes then. Without their Twitter intervention, I was a lost cause to them and their product.
Obviously if it does never work again, I'll use a different service altogether, but the important thing is that they made me feel valued and understood. I think a lot of companies should learn from just this one instance, and I know many like Dell already look after their customers and users this way, not to mention potential customers.
Time to get on board those of you who haven't yet!