Once you've been blogging for a little while, the possibility of companies coming along to offer collaborations or sponsorships (be that through paid posts or free products) evidently becomes more likely. Although it should never be the main purpose of blogging, especially as it takes a considerable amount of time for your blog to reach the point of getting these offers, the first few emails you receive from companies are always exciting, as it's nice to realise you've been recognised within this community. I can say for myself that the first email I received regarding a sponsored post excited me immensely, and evidently I jumped on board straight away. But I really wish I didn't now.